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  • PHP Verification Codes CAPTCHA

    - by Juddling
    I run a game website so I have many users logged in and they can do certain things once every two minutes. I have a CAPTCHA system in places, and for some things it will always ask for a code, and for other things, it will ask once every 10 minutes. I have had some players use the auto submit feature on Opera, and my CAPTCHA system does stop them. My question is, how can I minimise the amount of times I am asking for a code, but still stop people using this auto-submit?

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  • Optimizing tasks to reduce CPU in a trading application

    - by Joel
    Hello, I have designed a trading application that handles customers stocks investment portfolio. I am using two datastore kinds: Stocks - Contains unique stock name and its daily percent change. UserTransactions - Contains information regarding a specific purchase of a stock made by a user : the value of the purchase along with a reference to Stock for the current purchase. db.Model python modules: class Stocks (db.Model): stockname = db.StringProperty(multiline=True) dailyPercentChange=db.FloatProperty(default=1.0) class UserTransactions (db.Model): buyer = db.UserProperty() value=db.FloatProperty() stockref = db.ReferenceProperty(Stocks) Once an hour I need to update the database: update the daily percent change in Stocks and then update the value of all entities in UserTransactions that refer to that stock. The following python module iterates over all the stocks, update the dailyPercentChange property, and invoke a task to go over all UserTransactions entities which refer to the stock and update their value: Stocks.py # Iterate over all stocks in datastore for stock in Stocks.all(): # update daily percent change in datastore db.run_in_transaction(updateStockTxn, stock.key()) # create a task to update all user transactions entities referring to this stock taskqueue.add(url='/task', params={'stock_key': str(stock.key(), 'value' : self.request.get ('some_val_for_stock') }) def updateStockTxn(stock_key): #fetch the stock again - necessary to avoid concurrency updates stock = db.get(stock_key) stock.dailyPercentChange= data.get('some_val_for_stock') # I get this value from outside ... some more calculations here ... stock.put() Task.py (/task) # Amount of transaction per task amountPerCall=10 stock=db.get(self.request.get("stock_key")) # Get all user transactions which point to current stock user_transaction_query=stock.usertransactions_set cursor=self.request.get("cursor") if cursor: user_transaction_query.with_cursor(cursor) # Spawn another task if more than 10 transactions are in datastore transactions = user_transaction_query.fetch(amountPerCall) if len(transactions)==amountPerCall: taskqueue.add(url='/task', params={'stock_key': str(stock.key(), 'value' : self.request.get ('some_val_for_stock'), 'cursor': user_transaction_query.cursor() }) # Iterate over all transaction pointing to stock and update their value for transaction in transactions: db.run_in_transaction(updateUserTransactionTxn, transaction.key()) def updateUserTransactionTxn(transaction_key): #fetch the transaction again - necessary to avoid concurrency updates transaction = db.get(transaction_key) transaction.value= transaction.value* self.request.get ('some_val_for_stock') db.put(transaction) The problem: Currently the system works great, but the problem is that it is not scaling well… I have around 100 Stocks with 300 User Transactions, and I run the update every hour. In the dashboard, I see that the task.py takes around 65% of the CPU (Stock.py takes around 20%-30%) and I am using almost all of the 6.5 free CPU hours given to me by app engine. I have no problem to enable billing and pay for additional CPU, but the problem is the scaling of the system… Using 6.5 CPU hours for 100 stocks is very poor. I was wondering, given the requirements of the system as mentioned above, if there is a better and more efficient implementation (or just a small change that can help with the current implemntation) than the one presented here. Thanks!! Joel

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  • How to change method signature in Netbeans Form Editor?

    - by Dzmitry Zhaleznichenka
    I create GUI in Netbeans Form Editor and want to change an auto-generated signature of one method, namely to add throws to it. How to do it? For instance, I have private void btOpenFileActionPerformed(java.awt.event.ActionEvent evt) {} And want to make it private void btOpenFileActionPerformed(java.awt.event.ActionEvent evt) throws AssertionError{} As the method signature is auto-generated, I cannot change it manually.

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  • Dynamic Objects for ASPxGridview

    - by André Snede Hansen
    I have a dictionary that is populated with data from a table, we are doing this so we can hold multiple SQL tables inside this object. This approached cannot be discussed. The Dictionary is mapped as a , and contains SQL column name and the value, and each dictionary resembles one row entry in the Table. Now I need to display this on a editable gridview, preferably the ASPxGridView. I already figured out that I should use Dynamic Objects(C#), and everything worked perfectly, up to the part where I find out that the ASPxGridview is built in .NET 2.0 and not 4.0 where Dynamic objects where implemented, therefor I cannot use it... As you cannot, to my knowledge, add rows to the gridview programmatically, I am out of ideas, and seek your help guys! protected void Page_Load(object sender, EventArgs e) { UserValidationTableDataProvider uvtDataprovider = _DALFactory.getProvider<UserValidationTableDataProvider>(typeof(UserValidationTableEntry)); string[] tableNames = uvtDataprovider.TableNames; UserValidationTableEntry[] entries = uvtDataprovider.getAllrecordsFromTable(tableNames[0]); userValidtionTableGridView.Columns.Clear(); Dictionary<string, string> firstEntry = entries[0].Values; foreach (KeyValuePair<string, string> kvp in firstEntry) { userValidtionTableGridView.Columns.Add(new GridViewDataColumn(kvp.Key)); } var dynamicObjectList = new List<dynamic>(); foreach (UserValidationTableEntry uvt in entries) { //dynamic dynObject = new MyDynamicObject(uvt.Values); dynamicObjectList.Add(new MyDynamicObject(uvt.Values)); } } public class MyDynamicObject : DynamicObject { Dictionary<string, string> properties = new Dictionary<string, string>(); public MyDynamicObject(Dictionary<string, string> dictio) { properties = dictio; } // If you try to get a value of a property // not defined in the class, this method is called. public override bool TryGetMember(GetMemberBinder binder, out object result) { // Converting the property name to lowercase // so that property names become case-insensitive. string name = binder.Name.ToLower(); string RResult; // If the property name is found in a dictionary, // set the result parameter to the property value and return true. // Otherwise, return false. bool wasSuccesfull = properties.TryGetValue(name, out RResult); result = RResult; return wasSuccesfull; } // If you try to set a value of a property that is // not defined in the class, this method is called. public override bool TrySetMember(SetMemberBinder binder, object value) { // Converting the property name to lowercase // so that property names become case-insensitive. properties[binder.Name.ToLower()] = value.ToString(); // You can always add a value to a dictionary, // so this method always returns true. return true; } } Now, I am almost certain that his "Dynamic object" approach, is not the one I can go with from here on. I hope you guys can help me :)!

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  • Box Shadow on only 3 sides

    - by Connor
    I have two overlapping divs that have css3 box shadows. The trouble is that even when I set the z-index I will still need to eliminate one of the div's box-shadow. I have seen cases where negative spreads and zero values are used but I don't think that would work here. The code I have now is: #bulb-top { position: relative; width: 280px; height: 280px; background-color: #E5F7A3; -webkit-border-radius: 280px; -moz-border-radius: 280px; border-radius: 280px; border: 8px solid #FFF40C; top: -430px; margin-left: auto; margin-right: auto; -webkit-box-shadow: 0px 0px 15px 1px #FFF40C; -moz-box-shadow: 0px 0px 15px 1px #FFF40C; box-shadow: 0px 0px 15px 1px #FFF40C; z-index: 4; } #bulb-bottom { position: relative; width: 140px; height: 120px; background-color: #E5F7A3; -moz-border-radius-topleft: 0px; -moz-border-radius-topright: 0px; -moz-border-radius-bottomright: 30px; -moz-border-radius-bottomleft: 30px; -webkit-border-radius: 0px 0px 30px 30px; border-radius: 0px 0px 30px 30px; border-left: 8px solid #FFF40C; border-right: 8px solid #FFF40C; border-bottom: 8px solid #FFF40C; top: -455px; margin-left: auto; margin-right: auto; -webkit-box-shadow: 0px 0px 15px 1px #FFF40C; -moz-box-shadow: 0px 0px 15px 1px #FFF40C; box-shadow: 0px 0px 15px 1px #FFF40C; z-index: 5; } http://jsfiddle.net/minitech/g42vq/3/

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  • how to create startup application in android?

    - by Karthick
    I am new to android. I need to create an auto startup application. That application will control the files( if we open a image file from Gallery (or) mail attachments, on that time our application give a alert dialog to the user). Please guide to how to create an auto startup application to control all the file format in the android emulator.

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  • Disable button after submit

    - by Chris Philpotts
    I'm trying to disable a button when a user submits a payment form and the code to post the form is causing a double post in firefox. This problem does not occur when the code is removed, and does not occur in any browser other than firefox. Any idea how to prevent the double post here? System.Text.StringBuilder sb = new StringBuilder(); sb.Append("if (typeof(Page_ClientValidate) == 'function') { "); sb.Append("if (Page_ClientValidate() == false) { return false; }} "); sb.Append("this.value = 'Please wait...';"); sb.Append("this.disabled = true;"); sb.Append(Page.GetPostBackEventReference(btnSubmit )); sb.Append(";"); btnSubmit.Attributes.Add("onclick", sb.ToString()); it's the sb.Append(Page.GetPostBackEventReference(btnSubmit )) line that's causing the issue Thanks EDIT: Here's the c# of the button: <asp:Button ID="cmdSubmit" runat="server" Text="Submit" /> here's the html This code posts twice (and disables the submit button and verifies input): <input type="submit" name="ctl00$MainContent$cmdSubmit" value="Submit" onclick="if (typeof(Page_ClientValidate) == 'function') { if (Page_ClientValidate() == false) { return false; }} this.value = 'Please wait...';this.disabled = true;document.getElementById('ctl00_MainContent_cmdBack').disabled = true;__doPostBack('ctl00$MainContent$cmdSubmit','');" id="ctl00_MainContent_cmdSubmit" /> This code posts twice (but doesn’t disable the submit button): <input type="submit" name="ctl00$MainContent$cmdSubmit" value="Submit" onclick="__doPostBack('ctl00$MainContent$cmdSubmit','');" id="ctl00_MainContent_cmdSubmit" /> This code posts once (but doesn’t verify the user input and doesn’t disable the submit button): <input type="submit" name="ctl00$MainContent$cmdSubmit" value="Submit" id="ctl00_MainContent_cmdSubmit" /> This code posts once (but doesn’t disable submit button): <input type="submit" name="ctl00$MainContent$cmdSubmit" value="Submit" onclick="javascript:WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions(&quot;ctl00$MainContent$cmdSubmit&quot;, &quot;&quot;, true, &quot;&quot;, &quot;&quot;, false, false))" id="ctl00_MainContent_cmdSubmit" /> This code doesn’t post at all: <input type="submit" name="ctl00$MainContent$cmdSubmit" value="Submit" onclick="this.disabled = true;WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions(&quot;ctl00$MainContent$cmdSubmit&quot;, &quot;&quot;, true, &quot;&quot;, &quot;&quot;, false, false))" id="ctl00_MainContent_cmdSubmit" /> Obviously it’s the disabling of the submit button that’s posing the problem. Do you have any ideas how we can disable the submit to avoid multiple clicking?

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  • Make html footer occupy the rest of the body

    - by w0rldart
    So I am trying to code the footer of my web app of it occupies the rest of the body's height. Picture: http://img1.uploadscreenshot.com/images/orig/3/8906151296-orig.png Notice the light area beneath the dark area, the dark area should occupy all of it. Some of my html code: <body> .... <footer> <hr> <ul id="footerContainer"> <li class="right"> <ul> <li> <a href="" class="family-filter">Filtro Fami....</a> </li> </ul> </li> </ul> </footer> <script>...</script> </body></html> CSS: .... #footerContainer {width: 90%; min-width: 525px; margin: 0 auto; position: relative;} .... footer hr{ border: 0; height: 30px; background: url('../imgs/footer-top.png') repeat-x scroll; } footer { background: url('../imgs/footer-bg.png') repeat scroll bottom; height: 100%; display: block; margin: 0 auto; padding: 0; overflow: auto; } #footerContainer {margin: 0 auto; position: relative;} #footerContainer li { display: inline;} #footerContainer li .right {float: right;} #footerContainer li a {} Any suggestions? Update1: This is what happens: http://img1.uploadscreenshot.com/images/orig/3/8906391235-orig.png when I set html,body { width: 100%; height: 100%; margin: 0; padding: 0; } Update2: http://awesomescreenshot.com/0382hf1ff Zoom out and in at this page: line25.com/wp-content/uploads/2010/blog-design-coded/demo/… and check the footer area, that's how I need it work on my layout.

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  • programming question

    - by shivam
    using System; using System.Data; using System.Collections.Generic; using System.ComponentModel; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.Data.SqlClient; namespace datasynchronization { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { string connectString = @"Data Source=MOON\SQL2005;Initial Catalog=databaseA;Integrated Security=True"; using (var srcCon = new SqlConnection(connectString)) //connection to source table { srcCon.Open();//source table connection open SqlCommand cmd = new SqlCommand();// sqlobject for source table cmd.Connection = srcCon; string connectionString = @"Data Source=MOON\SQL2005;Initial Catalog=databaseB;Integrated Security=True"; using (var tgtCon = new SqlConnection(connectionString)) //connection to target table { tgtCon.Open(); //target table connection open SqlCommand objcmd1 = new SqlCommand();//sqlobject for target table objcmd1.Connection = tgtCon; objcmd1.CommandText = "SELECT MAX(date) FROM Table_2"; //query to findout the max date from target table var maxdate = objcmd1.ExecuteScalar(); // store the value of max date into the variable maxdate cmd.CommandText = string.Format("SELECT id,date,name,city,salary,region FROM Table_1 where date >'{0}'", maxdate); //select query to fetch rows from source table using (var reader = cmd.ExecuteReader()) { SqlCommand objcmd = new SqlCommand(); objcmd.Connection = tgtCon; objcmd.CommandText = "INSERT INTO Table_2(id,date,name,city,salary,region)VALUES(@id,@date,@name,@city,@salary,@region)"; objcmd.Parameters.Add("@id", SqlDbType.Int); objcmd.Parameters.Add("@date", SqlDbType.DateTime); objcmd.Parameters.Add("@name", SqlDbType.NVarChar); objcmd.Parameters.Add("@city", SqlDbType.NVarChar); objcmd.Parameters.Add("@salary", SqlDbType.Int); objcmd.Parameters.Add("@region", SqlDbType.Char); while (reader.Read()) { var order1 = reader[0].ToString(); var order2 = reader[1].ToString(); var order3 = reader[2].ToString(); var order4 = reader[3].ToString(); var order5 = reader[4].ToString(); var order6 = reader[5].ToString(); objcmd.Parameters["@id"].Value = order1; objcmd.Parameters["@date"].Value = order2; objcmd.Parameters["@name"].Value = order3; objcmd.Parameters["@city"].Value = order4; objcmd.Parameters["@salary"].Value = order5; objcmd.Parameters["@region"].Value = order6; objcmd.ExecuteNonQuery(); } } tgtCon.Close(); } srcCon.Close(); } } } } how can i organize the above written code in an efficient way?

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  • How to turn off autosignin of registered transports in Openfire ?

    - by Jacques René Mesrine
    This is regarding the gateway XEP 0100 support in Openfire. I have noticed that for some transports, they are auto-signed in once a connection to openfire succeeds (via the xmpp user). This applies specifically to QQ. How does one turn off this auto-signin feature ? Basically from a client perspective, I want to be able to signin selectively. So when I create an XMPPConnection to openfire, all transports should remain signed off until I send directed Presences to transports.

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  • API sanity autotest help needed

    - by rmk
    I am trying to auto-generate Unit Tests for my C code using API sanity autotest. But, the problem is that it is somewhat complex to use, and some tutorials / howto / other resources on how to use it would be really helpful. Have you had any luck with API sanity autotest? Do you think there's a better tool that can be used to auto-generate unit tests for C code?

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  • RemoteViewsService never gets called whenever we update app widget

    - by user3689160
    I am making one task widget application. This is a simple widget application which can be used to add new tasks by clicking on "+New Task". So ideally what I have done is, I've added a widget first, then when we click on "+New Task" a new activity opens up from where we can type in a new task and it should get updated in the ListView inside the home screen widget. Problem: Now whenever I add a new task, the ListView does not get updated. The data gets inside the database a new is created as well. My onUpdate(...) method gets called as well. There is a WidgetService.java which is a RemoteViewService that is being used to call the RemoteViewFactory but WidgetService.java gets called only when we create the widget, never after that. WidgetService.java never gets called again. I have the following setup MyWidgetProvider.java AppWidgetProvider class for updating the widget and filling its remote views. public class MyWidgetProvider extends AppWidgetProvider { public static int randomNumber=132; static RemoteViews remoteViews = null; @Override public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) { updateList(context,appWidgetManager,appWidgetIds); } public static void updateList(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds){ final int N = appWidgetIds.length; Log.d("MyWidgetProvider", "length="+appWidgetIds.length+""); for (int i = 0; i<N; ++i) { Log.d("MyWidgetProvider", "value"+ i + "="+appWidgetIds[i]); // Calling updateWidgetListView(context, appWidgetIds[i]); to load the listview with data remoteViews = updateWidgetListView(context, appWidgetIds[i]); // Updating the Widget with the new data filled remoteviews appWidgetManager.updateAppWidget(appWidgetIds[i], remoteViews); appWidgetManager.notifyAppWidgetViewDataChanged(appWidgetIds[i], R.id.lv_tasks); } } private static RemoteViews updateWidgetListView(Context context, int appWidgetId) { Intent svcIntent = null; remoteViews = new RemoteViews(context.getPackageName(),R.layout.widget_demo); //RemoteViews Service needed to provide adapter for ListView svcIntent = new Intent(context, WidgetService.class); //passing app widget id to that RemoteViews Service svcIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId); //setting a unique Uri to the intent //binding the data from the WidgetService to the svcIntent svcIntent.setData(Uri.parse(svcIntent.toUri(Intent.URI_INTENT_SCHEME))); //setting adapter to listview of the widget remoteViews.setRemoteAdapter(R.id.lv_tasks, svcIntent); //setting click listner on the "New Task" (TextView) of the widget remoteViews.setOnClickPendingIntent(R.id.tv_add_task, buildButtonPendingIntent(context)); return remoteViews; } // Just to create PendingIntent, this will be broadcasted everytime textview containing "New Task" is clicked and OnReceive method of MyWidgetIntentReceiver.java will run public static PendingIntent buildButtonPendingIntent(Context context) { Intent intent = new Intent(); intent.putExtra("TASK_DONE_VALUE_VALID", false); intent.setAction("com.ommzi.intent.action.CLEARTASK"); return PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT); } // This method is defined here so that we can update the remoteviews from other classes as well, like we'll do it in MyWidgetIntentReceiver.java public static void pushWidgetUpdate(Context context, RemoteViews remoteViews) { ComponentName myWidget = new ComponentName(context, MyWidgetProvider.class); AppWidgetManager manager = AppWidgetManager.getInstance(context); manager.updateAppWidget(myWidget, remoteViews); } } WidgetService.java A RemoteViewsService class for creating a RemoteViewsFactory. public class WidgetService extends RemoteViewsService { @Override public RemoteViewsFactory onGetViewFactory(Intent intent) { int appWidgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,AppWidgetManager.INVALID_APPWIDGET_ID); return (new ListProvider(this.getApplicationContext(), intent)); } } ListProvider.java A RemoteViewsFactory class for filling the ListView inside the widget. public class ListProvider implements RemoteViewsFactory { private List<TemplateTaskData> tasks; private Context context = null; private int appWidgetId; int increment=0; public ListProvider(Context context, Intent intent) { this.context = context; appWidgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,AppWidgetManager.INVALID_APPWIDGET_ID); //appWidgetId = Integer.valueOf(intent.getData().getSchemeSpecificPart())- MyWidgetProvider.randomNumber; populateListItem(); } private void populateListItem() { tasks = new ArrayList<TemplateTaskData>(); com.ommzi.database.sqliteDataBase letStartDB = new com.ommzi.database.sqliteDataBase(context); letStartDB.open(); tasks=letStartDB.getData(); letStartDB.close(); } public int getCount() { return tasks.size(); } public long getItemId(int position) { return position; } public RemoteViews getViewAt(int position) { // We are only showing the text view field here as there is limitation on using Checkbox within the widget // We prefer to on an activity for the user to make comprehensive changes as changes inside the widget is always limited. // To view the supported list of views for the widget you can visit http://developer.android.com/guide/topics/appwidgets/index.html final RemoteViews remoteView = new RemoteViews(context.getPackageName(), R.layout.screen_wcitem); TemplateTaskData taskDTO = tasks.get(position); Log.d("My ListProvider", "1"); remoteView.setTextViewText(R.id.wc_add_task, taskDTO.getTaskName()); if(taskDTO.getTaskDone()){ remoteView.setImageViewResource(R.id.imageView1, R.drawable.checked); }else{ remoteView.setImageViewResource(R.id.imageView1, R.drawable.unchecked); } Intent intent = new Intent(); intent.setAction("com.ommzi.intent.action.GETTASK"); intent.putExtra("TASK_DONE_VALUE_VALID", true); intent.putExtra("ROWID", taskDTO.getRowId()); intent.putExtra("TASK_NAME", taskDTO.getTaskName()); intent.putExtra("TASK_DONE_VALUE", taskDTO.getTaskDone()); remoteView.setOnClickPendingIntent(R.id.imageView1, PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)); Log.d("My ListProvider, Inside getView", "Value of Incrementor=" + increment + "\n ROWID=" + taskDTO.getRowId() + "\n TASK_NAME=" + taskDTO.getTaskName() + "\n TASK_DONE_VALUE=" +taskDTO.getTaskDone() + "\n Total Database Size=" + tasks.size()); return remoteView; } public RemoteViews getLoadingView() { // TODO Auto-generated method stub return null; } public int getViewTypeCount() { // TODO Auto-generated method stub return 1; } public boolean hasStableIds() { // TODO Auto-generated method stub return false; } public void onCreate() { // TODO Auto-generated method stub } public void onDataSetChanged() { // TODO Auto-generated method stub } public void onDestroy() { // TODO Auto-generated method stub } } GetTaskActivity.java This is another activity that is fired from a BroadcastReceiver(MyWidgetIntentReceiver.java). Purpose of this is to get a new task added to the list of task. MyWidgetIntentReceiver.java BroadcastReceiver fired using a pending intent that starts an activity GetTaskActivity.java. Please help me out with this problem. I am seen all the posts here and on other websites no body is having any solution. But I am sure a solution exist to this. Thanks for your help!

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  • Turning temporary stringstream to c_str() in single statement

    - by AshleysBrain
    Consider the following function: void f(const char* str); Suppose I want to generate a string using stringstream and pass it to this function. If I want to do it in one statement, I might try: f((std::ostringstream() << "Value: " << 5).str().c_str()); // error This gives an error: 'str()' is not a member of 'basic_ostream'. OK, so operator<< is returning ostream instead of ostringstream - how about casting it back to an ostringstream? 1) Is this cast safe? f(static_cast<std::ostringstream&>(std::ostringstream() << "Value: " << 5).str().c_str()); // incorrect output Now with this, it turns out for the operator<<("Value: ") call, it's actually calling ostream's operator<<(void*) and printing a hex address. This is wrong, I want the text. 2) Why does operator<< on the temporary std::ostringstream() call the ostream operator? Surely the temporary has a type of 'ostringstream' not 'ostream'? I can cast the temporary to force the correct operator call too! f(static_cast<std::ostringstream&>(static_cast<std::ostringstream&>(std::ostringstream()) << "Value: " << 5).str().c_str()); This appears to work and passes "Value: 5" to f(). 3) Am I relying on undefined behavior now? The casts look unusual. I'm aware the best alternative is something like this: std::ostringstream ss; ss << "Value: " << 5; f(ss.str().c_str()); ...but I'm interested in the behavior of doing it in one line. Suppose someone wanted to make a (dubious) macro: #define make_temporary_cstr(x) (static_cast<std::ostringstream&>(static_cast<std::ostringstream&>(std::ostringstream()) << x).str().c_str()) // ... f(make_temporary_cstr("Value: " << 5)); Would this function as expected?

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  • C# Working with Linq binding

    - by Isuru
    I have designed Types as follow: class Cricket { string type; Team tm; public Team Team { get { return tm; } set { tm = value; } } public string Type { get { return type; } set { type = value; } } } class Team { string country; Players plr; public Players Players { get {return plr; } set { plr = value; } } public string Country { get { return country; } set { country = value; } } } class Players { string name; DateTime dob; int run; public string Name { get { return name; } set { name = value; } } public DateTime DOB { get { return dob; } set { dob = value; } } public int Run { get { return run; } set { run = value; } } } I have to get the following using LINQ techniques. 1) Youngest all data of the youngest player among all teams 2) Oldest Player of each team 3) The highest run scorer will receive Gold Medal,rest of the players of all team will receive Silver medal. (Please look at the GetPlayer() i have declared var Medal=new String[] {"Gold","Silver"} to associate the Medal ) public void GetPlayer() { var TeamMatrix = new Cricket[] { new Cricket{ Type="Twenty20", Team=new Team{ Country="England", Players=new Players{ DOB=Convert.ToDateTime("01/Jan/1989"), Name="Russel", Run=45}}}, new Cricket{ Type="Twenty20", Team=new Team{ Country="England", Players=new Players{ DOB=Convert.ToDateTime("01/Jan/1991"), Name="Joel", Run=56}}}, new Cricket{ Type="Twenty20", Team=new Team{ Country="Australia", Players=new Players{ DOB=Convert.ToDateTime("01/Jan/1990"), Name="Clark", Run=145}}}, new Cricket{ Type="Twenty20", Team=new Team{ Country="Australia", Players=new Players{ DOB=Convert.ToDateTime("01/Jan/1971"), Name="Bevan", Run=156}}} }; var Medal = new string[] { "Gold", "Silver" }; var tm = (from mat in TeamMatrix select new { mat.Team.Players.DOB }).Max(); Console.WriteLine("Youngest Age={0}",tm); } When I declare var tm = (from mat in TeamMatrix select new { mat.Team.Players.DOB }).Max(); I receive error atleast one object must implement IComparable. What is the actual way to complete the above three tasks? ( Tasks 1 ,2 ,3 are explained above). Thanks to all.

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  • Hierarchy as grid

    - by seesharp
    I have hierarchy: public class Parameter { public string Name { get; set; } public Value Value { get; set; } } public abstract class Value { } public class StringValue : Value { public string Str { get; set; } } public class ComplexValue : Value { public ComplexValue() { Parameters = new List<Parameter>(); } public List<Parameter> Parameters { get; set; } } /// Contains ComplexValue public class ComplexParameter : Parameter { } And XAML with templates <Window.Resources> <DataTemplate DataType="{x:Type pc:Parameter}"> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition/> <ColumnDefinition/> </Grid.ColumnDefinitions> <Label Grid.Column="0" Content="{Binding Name}"/> <ContentPresenter Grid.Column="1" Content="{Binding Value}"/> </Grid> </DataTemplate> <DataTemplate DataType="{x:Type pc:ComplexParameter}"> <StackPanel> <Label Content="{Binding Name}"/> <ContentControl Margin="18,0,0,0" Content="{Binding Value}"/> </StackPanel> </DataTemplate> <DataTemplate DataType="{x:Type pc:ComplexValue}"> <ItemsControl ItemsSource="{Binding Parameters}"/> </DataTemplate> <DataTemplate DataType="{x:Type pc:StringValue}"> <TextBox Text="{Binding Str}"/> </DataTemplate> </Window.Resources> This look like: Param1 -Control---- Param2 -Control---- Complex1 Sub Param1 -Control- Sub Param2 -Control- Or image here: freeimagehosting.net/uploads/9d438f52e7.png Question How to do indent only in left column (parameter names). Something like this: Param1 -Control---- Param2 -Control---- Complex1 Sub Param1 -Control---- Sub Param2 -Control---- Or image here: freeimagehosting.net/uploads/4ab3045b75.png

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  • using AsyncTask class for parallel operationand displaying a progress bar

    - by Kumar
    I am displaying a progress bar using Async task class and simulatneously in parallel operation , i want to retrieve a string array from a function of another class that takes some time to return the string array. The problem is that when i place the function call in doing backgroung function of AsyncTask class , it gives an error in Doing Background and gives the message as cant change the UI in doing Background .. Therefore , i placed the function call in post Execute method of Asynctask class . It doesnot give an error but after the progress bar has reached 100% , then the screen goes black and takes some time to start the new activity. How can i display the progress bar and make the function call simultaneously.??plz help , m in distress here is the code package com.integrated.mpr; import android.app.Activity; import android.app.ProgressDialog; import android.content.Intent; import android.os.AsyncTask; import android.os.Bundle; import android.os.Handler; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; public class Progess extends Activity implements OnClickListener{ static String[] display = new String[Choose.n]; Button bprogress; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.progress); bprogress = (Button) findViewById(R.id.bProgress); bprogress.setOnClickListener(this); } @Override public void onClick(View v) { // TODO Auto-generated method stub switch(v.getId()){ case R.id.bProgress: String x ="abc"; new loadSomeStuff().execute(x); break; } } public class loadSomeStuff extends AsyncTask<String , Integer , String>{ ProgressDialog dialog; protected void onPreExecute(){ dialog = new ProgressDialog(Progess.this); dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); dialog.setMax(100); dialog.show(); } @Override protected String doInBackground(String... arg0) { // TODO Auto-generated method stub for(int i = 0 ;i<40;i++){ publishProgress(5); try { Thread.sleep(1000); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } } dialog.dismiss(); String y ="abc"; return y; } protected void onProgressUpdate(Integer...progress){ dialog.incrementProgressBy(progress[0]); } protected void onPostExecute(String result){ display = new Logic().finaldata(); Intent openList = new Intent("com.integrated.mpr.SENSITIVELIST"); startActivity(openList); } } }

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  • problem with select boxes - second options based on first selection

    - by Charles Marsh
    Hello All, I just posted a question about opening in a new window but if I use window.location it doesn't work?? is there a problem with my javascript? <script type="text/javascript"> function setOptions(chosen){ var selbox = document.formName.table; selbox.options.length = 0; if (chosen == " ") { selbox.options[selbox.options.length] = new Option('No diploma selected',' '); } if (chosen == "1") { selbox.options[selbox.options.length] = new Option('first choice - option one','http://www.pitman-training.com'); selbox.options[selbox.options.length] = new Option('first choice - option two','onetwo'); } if (chosen == "2") { selbox.options[selbox.options.length] = new Option('second choice - option one','twoone'); selbox.options[selbox.options.length] = new Option('second choice - option two','twotwo'); selbox.options[selbox.options.length] = new Option('second choice - option three','twothree'); selbox.options[selbox.options.length] = new Option('second choice - option four','twofour'); } if (chosen == "3") { selbox.options[selbox.options.length] = new Option('third choice - option one','threeone'); selbox.options[selbox.options.length] = new Option('third choice - option two','threetwo'); } } </script> Its a little messy I know... <form name="formName" method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>"> <select name="optone" size="1" onchange="setOptions(document.formName.optone.options[document.formName.optone.selectedIndex].value);"> <option value=" " selected="selected">Please select a diploma</option> <option value="1">First Choice</option> <option value="2">Second Choice</option> <option value="3">Third Choice</option> </select> <select name="table" size="1" > <option value=" " selected="selected">No diploma selected</option> </select> <input type="submit" onclick="ob=this.form.table;window.location(ob.options[ob.selectedIndex].value)"/> </form> to be honest I'm not happy with this anyway I want a way to hide the Submit button until the second selected box has been selected...but I'm no java expert! Can anyone point me in the right direction?

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  • Restore previously serialized JFrame-object, how?

    - by elementz
    Hi all. I have managed to serialize my very basic GUI-object containing a JTextArea and a few buttons to a file 'test.ser'. Now, I would like to completely restore the previously saved state from 'test.ser', but seem to have a misconception of how to properly deserialize an objects state. The class MyFrame creates the JFrame and serializes it. public class MyFrame extends JFrame implements ActionListener { // Fields JTextArea textArea; String title; static MyFrame gui = new MyFrame(); private static final long serialVersionUID = 1125762532137824262L; /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub gui.run(); } // parameterless default contructor public MyFrame() { } // constructor with title public MyFrame(String title) { } // creates Frame and its Layout public void run() { JFrame frame = new JFrame(title); JPanel panel_01 = new JPanel(); JPanel panel_02 = new JPanel(); JTextArea textArea = new JTextArea(20, 22); textArea.setLineWrap(true); JScrollPane scrollPane = new JScrollPane(textArea); scrollPane.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED); panel_01.add(scrollPane); // Buttons JButton saveButton = new JButton("Save"); saveButton.addActionListener(this); JButton loadButton = new JButton("Load"); loadButton.addActionListener(this); panel_02.add(loadButton); panel_02.add(saveButton); // Layout frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.getContentPane().add(BorderLayout.CENTER, panel_01); frame.getContentPane().add(BorderLayout.SOUTH, panel_02); frame.setSize(300, 400); frame.setVisible(true); } /* * */ public void serialize() { try { ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("test.ser")); oos.writeObject(gui); oos.close(); } catch (Exception e) { // TODO: handle exception e.printStackTrace(); } } public void actionPerformed(ActionEvent ev) { System.out.println("Action received!"); gui.serialize(); } } Here I try to do the deserialization: public class Deserialize { static Deserialize ds; static MyFrame frame; public static void main(String[] args) { try { ObjectInputStream ois = new ObjectInputStream(new FileInputStream("test.ser")); frame = (MyFrame) ois.readObject(); ois.close(); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (ClassNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } } Maybe somebody could point me into the direction where my misconception is? Thx in advance!

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  • Why Emacs/Vim/Textmate? Isn't Xcode good enough?

    - by ivanTheTerrible
    Hi I mostly do C++, Objective-C programming. And I found Xcode plus an auto completion/macro plugin (Completion Dictionary) quite adequate. However, all people seem to praise over their pure text editors. I tried Textmate for a bit; liked its simplicity but dislike its files/framework handling. Am I missing something here? Or, do Vim or Emacs have auto-completion as good as Xcode?

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  • How do I control the direction of the scroll on my coda slider?

    - by lightingwrist
    Hello, I have a coda slider and am unable to determine the direction of the scroll. I have 3 panels that I want to scroll left to right. Sometimes it scrolls left to right, sometimes up and down, and sometimes horizontally. How do I lock it down to go the direction I want? Here is the HTML: <body> <div id="slider_home" class="round_10px"> <ul class="navigation_home"> <li><a href="#scroll_Parents" class="round_10px">Information For Parents</a></li> <li><a href="#scroll_Materials" class="round_10px">Print Materials</a></li> <li><a href="#scroll_Resources" class="round_10px">Online Resources</a></li> </ul> <div id="scroll_bg_home"> <div class="scroll_home"> <div class="scrollContainer_home"> <div class="panel_home" id="scroll_Parents"> content </div> <div class="panel_home" id="scroll_Materials"> content </div> <div class="panel_home" id="scroll_Resources"> content </div> </div> </div> </div> </div> </body> Here is the CSS: #wrapper {width:550px;margin:0px auto;} #intro {padding-bottom:10px;} h2 {margin:0;margin-bottom:14px;padding:0;} #slider {width:631px;margin:10px auto 0px auto;position:relative;} #scroll_bg{height:360px;width:590px;overflow:hidden;position:relative;clear:left;background:#FFFFFF url(images/) no-repeat; margin:0px auto 0px auto} .scroll{ background:transparent; width:550px; height:370px; padding:0px; margin:0px auto; overflow:hidden; } .scrollContainer div.panel {padding:20px 0px;height:330px; width:550px;margin:0px;float:left;} #shade {background:#EDEDEC url(images/shade.jpg) no-repeat 0 0;height:50px;} ul.navigation {list-style:none;margin:0px 0px 0px 23px;padding:0px;padding-bottom:0px;} ul.navigation li {display:inline; margin-right:5px;} ul.navigation li a { background:#FFFFFF;font-family:Arial, Helvetica, sans-serif; font-size:16px; font-weight:bold; color:#CCCCCC;padding:5px 5px 5px 5px;border:1px #F4F4F4 solid;text-decoration: none;} ul.navigation a:hover { color:#EDEDEC;border:1px #E6E6E6 solid;} ul.navigation a.selected {color:#333333;} ul.navigation a:focus {outline:none;} .scrollButtons {position:absolute;top:150px;cursor:pointer;} .scrollButtons.left {left:-37px;top:20px} .scrollButtons.right {right:-32px;top:20px;} .hide {display:none;} And here is the Jquery includes file: // when the DOM is ready... $(document).ready(function () { var $panels = $('#slider_home .scrollContainer_home > div.panel_home'); var $container = $('#slider_home .scrollContainer_home'); // if true, we'll float all the panels left and fix the width // of the container var horizontal = true; // float the panels left if we're going horizontal if (horizontal) { $panels.css({ 'float' : 'left', 'position' : 'relative' // IE fix to ensure overflow is hidden }); // calculate a new width for the container (so it holds all panels) $container.css('width', $panels[0].offsetWidth * $panels.length); } // collect the scroll object, at the same time apply the hidden overflow // to remove the default scrollbars that will appear var $scroll_bg = $('#scroll_bg_home'); var $scroll = $('#slider_home .scroll_home').css('overflow', 'hidden'); // apply our left + right buttons $scroll_bg .before('<img class="scrollButtons_home left" src="styles/images/BackFlip.jpg" />') .after('<img class="scrollButtons_home right" src="styles/images/flipForward.jpg" />'); // handle nav selection function selectNav() { $(this) .parents('ul:first') .find('a') .removeClass('selected') .end() .end() .addClass('selected'); } $('.navigation_home').find('a').click(selectNav); // go find the navigation link that has this target and select the nav function trigger(data) { var el = $('.navigation_home').find('a[href$="' + data.id + '"]').get(0); selectNav.call(el); } if (window.location.hash) { trigger({ id : window.location.hash.substr(1) }); } else { $('.navigation_home a:first').click(); } // offset is used to move to *exactly* the right place, since I'm using // padding on my example, I need to subtract the amount of padding to // the offset. Try removing this to get a good idea of the effect var offset = parseInt((horizontal ? $container.css('paddingTop') : $container.css('paddingLeft')) || 0) * -1; var scrollOptions = { target: $scroll, // the element that has the overflow // can be a selector which will be relative to the target items: $panels, navigation: '.navigation_home a', // selectors are NOT relative to document, i.e. make sure they're unique prev: 'img.left', next: 'img.right', // allow the scroll effect to run both directions axis: 'xy', onAfter: trigger, // our final callback offset: offset, // duration of the sliding effect duration: 500, // easing - can be used with the easing plugin: // http://gsgd.co.uk/sandbox/jquery/easing/ easing: 'swing' }; // apply serialScroll to the slider - we chose this plugin because it // supports// the indexed next and previous scroll along with hooking // in to our navigation. $('#slider_home').serialScroll(scrollOptions); // now apply localScroll to hook any other arbitrary links to trigger // the effect $.localScroll(scrollOptions); // finally, if the URL has a hash, move the slider in to position, // setting the duration to 1 because I don't want it to scroll in the // very first page load. We don't always need this, but it ensures // the positioning is absolutely spot on when the pages loads. scrollOptions.duration = 1; $.localScroll.hash(scrollOptions); });

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  • WPF - Two way binding use a user control...binding to object, not an element!

    - by Scott
    I created an object with a simple property with a default value. I then created a user control that has a text box in it. I set the datacontext of the user control to the object. The text box correctly shows the properties default value but I can't seem to update the property value when the user changes the text box value. I created a simple project to illustrate my code. Thanks for the help!! public partial class UserControl1 : UserControl { public UserControl1() { InitializeComponent(); } private string _titleValue; public string TitleValue { get { return _titleValue; } set { _titleValue = value; textBox1.Text = _titleValue; } } public static readonly DependencyProperty TitleValueProperty = DependencyProperty.Register( "TitleValue", typeof(string), typeof(UserControl1), new FrameworkPropertyMetadata(new PropertyChangedCallback(titleUpdated)) ); //Don't think I should need to do this!!! private static void titleUpdated(DependencyObject d, DependencyPropertyChangedEventArgs e) { ((UserControl1)d).TitleValue = (string)e.NewValue; } } <UserControl x:Class="WpfApplication1.UserControl1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" mc:Ignorable="d" d:DesignHeight="300" d:DesignWidth="300"> <Grid> <TextBox Height="23" HorizontalAlignment="Left" Margin="94,97,0,0" Name="textBox1" VerticalAlignment="Top" Width="120" Text="{Binding Path=TitleValue, Mode=TwoWay}"/> </Grid> </UserControl> public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); var dummy = new DummyObject("This is my title."); userControl11.DataContext = dummy; } private void button1_Click(object sender, RoutedEventArgs e) { MessageBox.Show("The value is: " + ((DummyObject)userControl11.DataContext).Title); } } <Window x:Class="WpfApplication1.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="350" Width="525" xmlns:my="clr-namespace:WpfApplication1"> <Grid> <my:UserControl1 HorizontalAlignment="Left" Margin="95,44,0,0" x:Name="userControl11" VerticalAlignment="Top" Height="191" Width="293" TitleValue="{Binding Path=Title, Mode=TwoWay}"/> <Button Content="Check Value" Height="23" HorizontalAlignment="Left" Margin="20,12,0,0" Name="button1" VerticalAlignment="Top" Width="75" Click="button1_Click" /> </Grid> </Window>

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  • Mootools 1.2.4 delegation not working in IE8...?

    - by michael
    Hey there everybody-- So I have a listbox next to a form. When the user clicks an option in the select box, I make a request for the related data, returned in a JSON object, which gets put into the form elements. When the form is saved, the request goes thru and the listbox is rebuilt with the updated data. Since it's being rebuilt I'm trying to use delegation on the listbox's parent div for the onchange code. The trouble I'm having is with IE8 (big shock) not firing the delegated event. I have the following HTML: <div id="listwrapper" class="span-10 append-1 last"> <select id="list" name="list" size="20"> <option value="86">Adrian Franklin</option> <option value="16">Adrian McCorvey</option> <option value="196">Virginia Thomas</option> </select> </div> and the following script to go with it: window.addEvent('domready', function() { var jsonreq = new Request.JSON(); $('listwrapper').addEvent('change:relay(select)', function(e) { alert('this doesn't fire in IE8'); e.stop(); var status= $('statuswrapper').empty().addClass('ajax-loading'); jsonreq.options.url = 'de_getformdata.php'; jsonreq.options.method = 'post'; jsonreq.options.data = {'getlist':'<?php echo $getlist ?>','pkey':$('list').value}; jsonreq.onSuccess = function(rObj, rTxt) { status.removeClass('ajax-loading'); for (key in rObj) { status.set('html','You are currently editing '+rObj['cname']); if ($chk($(key))) $(key).value = rObj[key]; } $('lalsoaccomp-yes').set('checked',(($('naccompkey').value > 0)?'true':'false')); $('lalsoaccomp-no').set('checked',(($('naccompkey').value > 0)?'false':'true')); } jsonreq.send(); }); }); (I took out a bit of unrelated stuff). So this all works as expected in firefox, but IE8 refuses to fire the delegated change event on the select element. If I attach the change function directly to the select, then it works just fine. Am I missing something? Does IE8 just not like the :relay? Sidenote: I'm very new to mootools and javascripting, etc, so if there's something that can be improved code-wise, please let me know too.. Thanks!

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  • .live event doesnt work till second click

    - by ChampionChris
    I have 2 list on a page that are linked. When I drag a li element from list 1 to list 2 the live events on list 1 don't work on the first click only second click. Below is the code that adds the li (obj) to list 2. function AddToDropBox(obj) { $(obj).children(".handle").animate({ width: "20px" }).children("strong").fadeOut(); $(obj).children("span:not(.track,.play,.handle,:has(.btn-edit))").fadeOut('fast'); $(obj).children(".play").css("margin-right", "8px"); $(obj).css({ "opacity": "0.0", "width": "284px" }).animate({ opacity: "1.0" }); if ($(".sidebar-drop-box ul").children(".admin-song").length > 0) { $(".dropTitle").fadeOut("fast"); $(".sidebar-drop-box ul.admin-song-list").css("min-height", "0"); } if (typeof SetLinks == 'function') { SetLinks(); } //CBG Changes adds media ID to hidden field //checks id there is a value in field then adds comma if(document.getElementById("ctl00_cphBody_hfRemoveMedia").value==""||document.getElementById("ctl00_cphBody_hfRemoveMedia").value==null) { document.getElementById("ctl00_cphBody_hfRemoveMedia").value=(obj).attr("mediaid"); } else { var localMediaIDs=document.getElementById("ctl00_cphBody_hfRemoveMedia").value; document.getElementById("ctl00_cphBody_hfRemoveMedia").value=localMediaIDs+", "+(obj).attr("mediaid"); } // alert("hfid: "+document.getElementById("ctl00_cphBody_hfRemoveMedia").value); //END CBG Modifications } this is one of the live() events that dont fire until the second click after the drag. This live() event is in a document.ready function(). // Live for deleting. $(".btn-del").live("click", function(e) { DeleteItem(this); $(this).removeClass("btn-del").addClass("btn-add").parents("li").removeClass("alt").addClass("removed"); var oldTxt = $(this).parents("li").find(".status").text(); $(this).parents("li").find(".status").text("Removed").attr("oldstat", oldTxt); $("#timeHolder input[type=hidden]").val(($("#timeHolder input[type=hidden]").val() * 1) - ($(this).parents("li").find(".time").attr("length") * 1)); CalculateAggregates(); isDirty = false; }); EDIT @dreaton.. Im new to jquery and javascript so thanks for the last tip... Im not sure what you mean about cache the query's. ... the delegete feature is giving me this Microsoft JScript runtime error: Object doesn't support this property or method this is the way I have the code $('#ulPlaylist').delegate('.btn-del', 'click', function (e) { DeleteItem(this); $(this).removeClass("btn-del").addClass("btn-add").parents("li").removeClass("alt").addClass("removed"); var oldTxt = $(this).parents("li").find(".status").text(); $(this).parents("li").find(".status").text("Removed").attr("oldstat", oldTxt); $("#timeHolder input[type=hidden]").val(($("#timeHolder input[type=hidden]").val() * 1) - ($(this).parents("li").find(".time").attr("length") * 1)); CalculateAggregates(); isDirty = false; });

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