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  • Saving an NSMutableArray of custom Objects

    - by aahrens
    I have a custom class that is used as a wrapper to an NSMutableArray @interface AllCourses : NSObject { NSMutableArray *arrClasses; } The array above stores Objects of another custom class. @interface Course : NSObject { NSString *className; NSString *classGrade; NSInteger creditHours; } I use the method below to add Course objects to my AllCourses //Adds a new Course to the total Courses -(void) addClass:(Course *)aCourse{ [arrClasses addObject:aCourse]; } What's going to be the best way to save the arrClasses MutableArray in AllCourses so that when my app loads it can keep the saved data the user already entered and populate it?

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  • get GET parameters in JSF's managed bean

    - by mykola
    Hello! Can someone tell me how to catch parameters passed from URI in JSF's managed bean? I have a navigation menu all nodes of which link to some navigation case. And i have two similar items there: Acquiring products and Issuing products. They have the same page but one different parameter: productType. I try to set it just by adding it to URL in "to-view-id" element like this: <navigation-case> <from-outcome>acquiring|products</from-outcome> <to-view-id>/pages/products/list_products.jspx?productType=acquiring</to-view-id> </navigation-case> <navigation-case> <from-outcome>issuing|products</from-outcome> <to-view-id>/pages/products/list_products.jspx?productType=issuing</to-view-id> </navigation-case> But i can't get this "productType" from my managed bean. I tried to get it through FacesContext like this: FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().get("productType") And like this: HttpServletRequest request = (HttpServletRequest)FacesContext.getCurrentInstance().getExternalContext().getRequest(); request.getParameter("productType"); And i tried to include it as a parameter of managed bean in faces-config.xml and then getting it through ordinary setter: <managed-bean> <managed-bean-name>MbProducts</managed-bean-name> <managed-bean-class>my.package.product.MbProducts</managed-bean-class> <managed-bean-scope>request</managed-bean-scope> <managed-property> <property-name>productType</property-name> <value>#{param.productType}</value> </managed-property> </managed-bean> ... public class MbProducts { ... public void setProductType(String productType) { this.productType = productType; } ... } But neither of these ways have helped me. All of them returned null. How can i get this productType? Or how can i pass it some other way?

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  • How to set classpath in manifest file , while creating JAR from eclipse?

    - by Hippo
    I am trying to creat JAR file through eclipse. I read some of the threads from stackoverflow as well as other forums. But nothing is helping. I have created a separate manifest file like this one. `Manifest-Version: 1.0 Main-Class: Main Class-Path: gnujaxp.jar iText-2.1.5.jar jcalendar.jar jcommon-1.0.16.jar jfreechart-1.0.13.jar jfreechart-1.0.13-experimental.jar jfreechart-1.0.13-swt.jar junit.jar servlet.jar swtgraphics2d.jar tinyos.jar ` I have put all this jars in same project folder. While exporting i am exporting all resources (meants this jar files also.) But still i am getting noclassdeffound error when my application tries to load any one of the jar included. M i wrong anywhere .. Thanks in advance.

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  • NHibernate criteria query question

    - by Chris
    I have 3 related objects (Entry, GamePlay, Prize) and I'm trying to find the best way to query them for what I need using NHibernate. When a request comes in, I need to query the Entries table for a matching entry and, if found, get a) the latest game play along with the first game play that has a prize attached. Prize is a child of GamePlay and each Entry object has a GamePlays property (IList). Currently, I'm working on a method that pulls the matching Entry and eagerly loads all game plays and associated prizes, but it seems wasteful to load all game plays just to find the latest one and any that contain a prize. Right now, my query looks like this: var entry = session.CreateCriteria<Entry>() .Add(Restrictions.Eq("Phone", phone)) .AddOrder(Order.Desc("Created")) .SetFetchMode("GamePlays", FetchMode.Join) .SetMaxResults(1).UniqueResult<Entry>(); Two problems with this: It loads all game plays up front. With 365 days of data, this could easily balloon to 300k of data per query. It doesn't eagerly load the Prize child property for each game. Therefore, my code that loops through the GamePlays list looking for a non-null Prize must make a call to load each Prize property I check. I'm not an nhibernate expert, but I know there has to be a better way to do this. Ideally, I'd like to do the following (pseudocode): entry = findEntry(phoneNumber) lastPlay = getLatestGamePlay(Entry) firstWinningPlay = getFirstWinningGamePlay(Entry) The end result of course is that I have the entry details, the latest game play, and the first winning game play. The catch is that I want to do this in as few database calls as possible, otherwise I'd just execute 3 separate queries. The object definitions look like: public class Entry { public Guid Id {get;set;} public string Phone {get;set;} public IList<GamePlay> GamePlays {get;set;} // ... other properties } public class GamePlay { public Guid Id {get;set;} public Entry Entry {get;set;} public Prize Prize {get;set;} // ... other properties } public class Prize { public Guid Id {get;set;} // ... other properties } The proper NHibernate mappings are in place, so I just need help figuring out how to set up the criteria query (not looking for HQL, don't use it).

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  • struct method linking

    - by James
    I'm updating some old code that has several POD structs that were getting zero'd out by memset (don't blame me...I didn't write this part). Part of the update changed some of them to classes that use private internal pointers that are now getting wiped out by the memset. So I added a [non-virtual] reset() method to the various structs and refactored the code to call that instead. One particular struct developed an "undefined reference to `blah::reset()'" error. Changing it from a struct to a class fixed the error. Calling nm on the .o file h, the mangled function names for that method look the same (whether it's a class or a struct). I'm using g++ 4.4.1, on Ubuntu. I hate the thought that this might be a compiler/linker bug, but I'm not sure what else it could be. Am I missing some fundamental difference between structs and classes? I thought the only meaningful ones were the public/private defaults and the way everyone thinks about them.

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  • how to udate window controls(NSTextField,NSCheckbox and etc) in binding manually

    - by Amit
    Hi, I am working on an application in which i need to store all the NSObject subclass properties into plist file and then allow users to store it and restore it. We call it profile and it can restore the saved state of all the controls/views on the window in my application. I have completed the storing/Restoring part, but the issue is when i am updating the class properties manually, it is not updating the control state Like checkboxs and others which is bind with the class property. Please let me know how can i update the controls state, if its KVC/KVO updated programatically. Thanks in advance

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  • PHP will not delete from MySQL

    - by Michal Kopanski
    For some reason, JavaScript/PHP wont delete my data from MySQL! Here is the rundown of the problem. I have an array that displays all my MySQL entries in a nice format, with a button to delete the entry for each one individually. It looks like this: <?php include("login.php"); //connection to the database $dbhandle = mysql_connect($hostname, $username, $password) or die("<br/><h1>Unable to connect to MySQL, please contact support at [email protected]</h1>"); //select a database to work with $selected = mysql_select_db($dbname, $dbhandle) or die("Could not select database."); //execute the SQL query and return records if (!$result = mysql_query("SELECT `id`, `url` FROM `videos`")) echo 'mysql error: '.mysql_error(); //fetch tha data from the database while ($row = mysql_fetch_array($result)) { ?> <div class="video"><a class="<?php echo $row{'id'}; ?>" href="http://www.youtube.com/watch?v=<?php echo $row{'url'}; ?>">http://www.youtube.com/watch?v=<?php echo $row{'url'}; ?></a><a class="del" href="javascript:confirmation(<? echo $row['id']; ?>)">delete</a></div> <?php } //close the connection mysql_close($dbhandle); ?> The delete button has an href of javascript:confirmation(<? echo $row['id']; ?>) , so once you click on delete, it runs this: <script type="text/javascript"> <!-- function confirmation(ID) { var answer = confirm("Are you sure you want to delete this video?") if (answer){ alert("Entry Deleted") window.location = "delete.php?id="+ID; } else{ alert("No action taken") } } //--> </script> The JavaScript should theoretically pass the 'ID' onto the page delete.php. That page looks like this (and I think this is where the problem is): <?php include ("login.php"); mysql_connect($hostname, $username, $password) or die("Unable to connect to MySQL"); mysql_select_db ($dbname) or die("Unable to connect to database"); mysql_query("DELETE FROM `videos` WHERE `videos`.`id` ='.$id.'"); echo ("Video has been deleted."); ?> If there's anyone out there that may know the answer to this, I would greatly appreciate it. I am also opened to suggestions (for those who aren't sure). Thanks!

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  • Highlight field in source code pane of Findbugs UI

    - by Ryan Fernandes
    I'm using a class that extends BytecodeScanningDetector to check for some problematic fields in a class. After detecting whether the field is problematic, I add it to the bug report like below: Once I run findbugs, it identifies the bug, lists it in the left pane, but does not highlight the corresponding source line. Any hints/help on this will be very appreciated. public void visit(Field f) { if (isProblematic(getXField())) { bugReporter.reportBug(new BugInstance(this, tBugType, HIGH_PRIORITY) .addClass(currentClass) //from visit(JavaClass) .addField(this)); } } public void visit(JavaClass someObj) { currentClass = someObj.getClassName(); } P.S. I tried posting this on the findbugs list but... no joy.

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  • Java File and ByteArray or InputStream - please quick help

    - by Peter Perhác
    I want to use jFuge to play some MIDI music in an applet. There's a class for the MIDI pattern - Pattern - and the only method to load the pattern is from a File. Now, I don't know how applets load files and what not, but I am using a framework (PulpCore) that makes loading assets a simple task. If I need to grab an asset from a ZIP catalogue, I can use the Assets class which provides get() and getAsStream() methods. get() returns the given asset as a ByteArray, the other as an InputStream. I need jFuge to load the pattern from either ByteArray or InputStream. In pseudo-code, I would like to do this: Pattern.load(new File(Assets.get("mymidifile.midi"))); however there is no File constructor that would take a ByteArray. Suggestions, please?

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  • How do I get my code to read the spaces between longs?

    - by WahtsUpWorld
    I apologize for any inconvenience that may occur in answering my question, I'm fairly new to programming and I'm so far only in the last weeks of my community college Java I class. The problem I am facing is in my code of which I cannot seem to get the PrintWriter to address the spaces in between my longs' phone number and social security I.D. The entire code consists of two classes in which one pulls from the other the information needed to parse and present the file writer/print writer. Here is the entire code w/ the second class after it: public class FinalProjectGroup1 { public static void main(String[] args) { } public String name; public long ssid; public double pay; public String address; public long number; public void cleanUpConstructor() {} public FinalProjectGroup1(String name, String address, double pay, long ssid, long number){ this.name = name; this.pay = pay; this.ssid = ssid; this.address = address; this.number = number; cleanUpConstructor(); } public void setName(String name) { this.name = name; } public String getName() { return name; } public void setPay(double pay) { this.pay = pay; } public double getPay() { return pay; } public void setSSID(long ssid) { this.ssid = ssid; } public long getSSID() { return ssid; } public void setAddress(String address) { this.address = address; } public String getAddress() { return address; } public void setNumber(long number) { this.number = number; } public long getNumber() { return number; } } SECOND CLASS import java.awt.EventQueue; import javax.swing.JFrame; import javax.swing.JLabel; import java.awt.Font; import javax.swing.JFileChooser; import javax.swing.JButton; import javax.swing.JTextField; import FinalProjectGroup1; import java.awt.event.ActionListener; import java.awt.event.ActionEvent; import java.io.FileWriter; import java.io.PrintWriter; public class FinalProjectGroup1Window { public JFrame frmTheBosssSecretary; public JTextField txtName; public JTextField txtSSID; public JTextField txtAddress; public JTextField txtNumber; public JTextField txtPay; public JTextField txtFindName; public JTextField txtFindSSID; public JTextField txtFindPay; public JTextField txtFolder; public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { public void run() { try { FinalProjectGroup1Window window = new FinalProjectGroup1Window(); window.frmTheBosssSecretary.setVisible(true); } catch (Exception e) { e.printStackTrace(); } } }); } public FinalProjectGroup1Window() { initialize(); } private void initialize() { frmTheBosssSecretary = new JFrame(); frmTheBosssSecretary.setFont(new Font("Times New Roman", Font.PLAIN, 12)); frmTheBosssSecretary.setTitle("The Boss's Secretary: Employee Generator/Finder"); frmTheBosssSecretary.setBounds(100, 100, 547, 302); frmTheBosssSecretary.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frmTheBosssSecretary.getContentPane().setLayout(null); JLabel lblFile = new JLabel("Employee Folder:"); lblFile.setFont(new Font("Times New Roman", Font.PLAIN, 12)); lblFile.setBounds(10, 10, 93, 14); frmTheBosssSecretary.getContentPane().add(lblFile); JLabel lblFindEmployee = new JLabel("Employee Finder"); lblFindEmployee.setFont(new Font("Times New Roman", Font.BOLD, 18)); lblFindEmployee.setBounds(194, 159, 142, 20); frmTheBosssSecretary.getContentPane().add(lblFindEmployee); JLabel lblEmployeeName = new JLabel("Employee Name:"); lblEmployeeName.setFont(new Font("Times New Roman", Font.PLAIN, 12)); lblEmployeeName.setBounds(10, 35, 93, 14); frmTheBosssSecretary.getContentPane().add(lblEmployeeName); JLabel lblSSID = new JLabel("Employee SSID:"); lblSSID.setFont(new Font("Times New Roman", Font.PLAIN, 12)); lblSSID.setBounds(10, 135, 85, 14); frmTheBosssSecretary.getContentPane().add(lblSSID); JLabel lblAddress = new JLabel("Employee Address:"); lblAddress.setFont(new Font("Times New Roman", Font.PLAIN, 12)); lblAddress.setBounds(10, 60, 105, 14); frmTheBosssSecretary.getContentPane().add(lblAddress); JLabel lblPhoneNumber = new JLabel("Employee Phone Number:"); lblPhoneNumber.setFont(new Font("Times New Roman", Font.PLAIN, 12)); lblPhoneNumber.setBounds(10, 85, 134, 14); frmTheBosssSecretary.getContentPane().add(lblPhoneNumber); JLabel lblPayRate = new JLabel("Employee Pay Rate:"); lblPayRate.setFont(new Font("Times New Roman", Font.PLAIN, 12)); lblPayRate.setBounds(10, 110, 105, 14); frmTheBosssSecretary.getContentPane().add(lblPayRate); JLabel lblFindEmployeeName = new JLabel("Find Employee Name:"); lblFindEmployeeName.setFont(new Font("Times New Roman", Font.PLAIN, 12)); lblFindEmployeeName.setBounds(10, 183, 115, 14); frmTheBosssSecretary.getContentPane().add(lblFindEmployeeName); JLabel lblFindSSID = new JLabel("Find Employee SSID:"); lblFindSSID.setFont(new Font("Times New Roman", Font.PLAIN, 12)); lblFindSSID.setBounds(10, 208, 105, 14); frmTheBosssSecretary.getContentPane().add(lblFindSSID); JLabel lblFindPay = new JLabel("Find Employee Address:"); lblFindPay.setFont(new Font("Times New Roman", Font.PLAIN, 12)); lblFindPay.setBounds(10, 233, 124, 14); frmTheBosssSecretary.getContentPane().add(lblFindPay); txtFolder = new JTextField(); txtFolder.setFont(new Font("Times New Roman", Font.PLAIN, 12)); txtFolder.setBounds(105, 7, 314, 20); frmTheBosssSecretary.getContentPane().add(txtFolder); txtFolder.setColumns(10); txtName = new JTextField(); txtName.setFont(new Font("Times New Roman", Font.PLAIN, 12)); txtName.setBounds(99, 32, 247, 20); frmTheBosssSecretary.getContentPane().add(txtName); txtName.setColumns(10); txtAddress = new JTextField(); txtAddress.setFont(new Font("Times New Roman", Font.PLAIN, 12)); txtAddress.setBounds(109, 57, 237, 20); frmTheBosssSecretary.getContentPane().add(txtAddress); txtAddress.setColumns(10); txtNumber = new JTextField(); txtNumber.setFont(new Font("Times New Roman", Font.PLAIN, 12)); txtNumber.setBounds(141, 82, 160, 20); frmTheBosssSecretary.getContentPane().add(txtNumber); txtNumber.setColumns(10); txtPay = new JTextField(); txtPay.setFont(new Font("Times New Roman", Font.PLAIN, 12)); txtPay.setBounds(116, 107, 105, 20); frmTheBosssSecretary.getContentPane().add(txtPay); txtPay.setColumns(10); txtSSID = new JTextField(); txtSSID.setFont(new Font("Times New Roman", Font.PLAIN, 12)); txtSSID.setBounds(97, 132, 124, 20); frmTheBosssSecretary.getContentPane().add(txtSSID); txtSSID.setColumns(10); txtFindName = new JTextField(); txtFindName.setFont(new Font("Times New Roman", Font.PLAIN, 12)); txtFindName.setBounds(122, 180, 314, 20); frmTheBosssSecretary.getContentPane().add(txtFindName); txtFindName.setColumns(10); txtFindSSID = new JTextField(); txtFindSSID.setFont(new Font("Times New Roman", Font.PLAIN, 12)); txtFindSSID.setBounds(122, 205, 122, 20); frmTheBosssSecretary.getContentPane().add(txtFindSSID); txtFindSSID.setColumns(10); txtFindPay = new JTextField(); txtFindPay.setFont(new Font("Times New Roman", Font.PLAIN, 12)); txtFindPay.setBounds(141, 230, 237, 20); frmTheBosssSecretary.getContentPane().add(txtFindPay); txtFindPay.setColumns(10); JButton btnAddEmployee = new JButton("Add Employee"); btnAddEmployee.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent arg0) { try { String name = txtName.getText(); String address = txtAddress.getText(); double pay = Double.parseDouble(txtPay.getText()); long ssid = Long.parseLong(txtSSID.getText()); long number = Long.parseLong(txtNumber.getText()); FinalProjectGroup1 ee = new FinalProjectGroup1(name, address, pay, ssid, number); FileWriter writer = new FileWriter(txtFolder.getText(), true); PrintWriter pw = new PrintWriter(writer); pw.println(ee.getName() + ", " + ee.getAddress() + ", " + ee.getNumber() + ", " + ee.getPay() + ", " + ee.getSSID()); pw.close(); } catch (Exception e) { return; } } }); JButton btnFolder = new JButton("Folder"); btnFolder.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent arg0) { JFileChooser bsearch = new JFileChooser(); int result = bsearch.showOpenDialog(null); if (result != JFileChooser.APPROVE_OPTION) return; txtFolder.setText(bsearch.getSelectedFile().getAbsolutePath()); } }); btnFolder.setFont(new Font("Times New Roman", Font.PLAIN, 12)); btnFolder.setBounds(429, 6, 75, 23); frmTheBosssSecretary.getContentPane().add(btnFolder); btnAddEmployee.setFont(new Font("Times New Roman", Font.PLAIN, 12)); btnAddEmployee.setBounds(356, 42, 159, 107); frmTheBosssSecretary.getContentPane().add(btnAddEmployee); JButton btnFindName = new JButton("Find"); btnFindName.setFont(new Font("Times New Roman", Font.PLAIN, 12)); btnFindName.setBounds(446, 179, 69, 23); frmTheBosssSecretary.getContentPane().add(btnFindName); JButton btnFindSSID = new JButton("Find"); btnFindSSID.setFont(new Font("Times New Roman", Font.PLAIN, 12)); btnFindSSID.setBounds(250, 204, 85, 23); frmTheBosssSecretary.getContentPane().add(btnFindSSID); JButton btnFindAddress = new JButton("Find"); btnFindAddress.setFont(new Font("Times New Roman", Font.PLAIN, 12)); btnFindAddress.setBounds(389, 229, 85, 23); frmTheBosssSecretary.getContentPane().add(btnFindAddress); } } The problem here lies in the JButton Add Employee. Where, as previously mentioned, the long's phone number and social security I.D. don't show the spaces in the text file.

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  • C# Operator Overloading post-fix increment

    - by Victor
    I'm coding a date class and am having trouble with the post-fix increment (the prefix increment seems fine). Here is the sample code: public class date { int year, month, day; public date(int d, int m, int y) { day = d; month = m; year = y; } static public date operator ++(date d) { return d.Next(d); } } The method "Next(date d)" takes a date and returns tomorrows date (I left it out for brevity). I'm to young in C# to understand why the prefix is fine but postfix increment does nothing. But remember in C++ we would have to have two methods instead of just one - for prefix and postfix increments. Also no errors or warnings on compile.

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  • Rails Model Relationship: Has one but also belongs to many

    - by Lowgain
    I have two Models, Modela and Modelb. Modela can only own one Modelb, but Modelb can be a part of many Modela's. What I have right now is class Modela < ActiveRecord::Base has_one :modelb end class Modelb < ActiveRecord::Base belongs_to :modela, :foreign_key => "modela_id" #might not make sense? end Not too sure about the whole :foreign_key thing I was doing there, but it was where it was when I left off. As I am trying to allow Modelb to be part of many Modela's, I don't want to add a modela_id field to the Modelb table. What is the best way to do this?

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  • Dynamic/runtime method creation (code generation) in Python

    - by Eli Bendersky
    Hello, I need to generate code for a method at runtime. It's important to be able to run arbitrary code and have a docstring. I came up with a solution combining exec and setattr, here's a dummy example: class Viking(object): def __init__(self): code = ''' def dynamo(self, arg): """ dynamo's a dynamic method! """ self.weight += 1 return arg * self.weight ''' self.weight = 50 d = {} exec code.strip() in d setattr(self.__class__, 'dynamo', d['dynamo']) if __name__ == "__main__": v = Viking() print v.dynamo(10) print v.dynamo(10) print v.dynamo.__doc__ Is there a better / safer / more idiomatic way of achieving the same result?

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  • More pythonic way to iterate

    - by fmark
    I am using a module that is part of a commercial software API. The good news is there is a python module - the bad news is that its pretty unpythonic. To iterate over rows, the follwoing syntax is used: cursor = gp.getcursor(table) row = cursor.Next() while row: #do something with row row = cursor.next() What is the most pythonic way to deal with this situation? I have considered creating a first class function/generator and wrapping calls to a for loop in it: def cursor_iterator(cursor): row = cursor.Next() while row: yield row row = cursor.next() [...] cursor = gp.getcursor(table) for row in cursor_iterator(cursor): # do something with row This is an improvement, but feels a little clumsy. Is there a more pythonic approach? Should I create a wrapper class around the table type?

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  • Possible to load an Enum based on a string name?

    - by Cooter
    OK, I don't think the title says it right... but here goes: I have a class with about 40 Enums in it. i.e: Class Hoohoo { public enum aaa : short { a = 0, b = 3 } public enum bbb : short { a = 0, b = 3 } public enum ccc : short { a = 0, b = 3 } } Now say I have a Dictionary of strings and values, and each string is the name of above mentioned enums: Dictionary<string,short>{"aaa":0,"bbb":3,"ccc":0} I need to change "aaa" into HooBoo.aaa to look up 0. Can't seem to find a way to do this since the enum is static. Otherwise I'll have to write a method for each enum to tie the string to it. I can do that but thats mucho code to write. Thanks, Cooter

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  • jquery datepicker predefined date

    - by r3try
    This might seem like a stupid easy question to some of you, but i'm new to jquery and can't get my datepicker to work like it should. This is my textbox where the datepicker is attached to: <asp:TextBox runat="server" ID="StartMonth" AutoPostBack="true" class="month-picker" /> and here is how i attach the datepicker. (I have multiple TextBoxes where the datepicker should be attached to, so i used the class attribute instead of the id.) $(".month-picker").datepicker({ dateFormat: 'MM yy', changeYear: true, yearRange: '-9:+9' }); What i want to archive is when i click into the textbox where the text is "August 2012" it should set the pre-selected date of the datepicker to this date. Can anyone help? Kind regards.

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  • Fluent-NHibernate - Component property attributes ignored by Convention

    - by BobTodd
    I have a component with a number of properties that have various attributes Normally when these attributes are added to a plain old domain object they are picked up by my custom AttributeConventions. For the Component properties they are not. Is there some extra wiring needed for these? e.g. public class Component { [Length(Max=50)] public virtual string Name {get; set;} } public class MyClass { public virtual Component Component {get; set;} [Length(Max=50)] public virtual string Color {get; set;} } I get a table MyClass with columns Color & ComponentName Color is an nvarchar(50) whilst ComponentName is an nvarchar(255) (the default)

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  • Propertygrid changes not picked up when using menu shortcut for saving

    - by Ebbe
    I am trying to implement a simple windows forms application, where the user can edit instances of a simple Person class. The application makes use of the standard propertygrid, assigning instances of the Person class to the SelectedObject property of the propertygrid. When the user clicks the menu item Save, the application gets the selected item from the propertygrid and saves it. This works fine. However, if a shortcut such as ctrl+S, assigned to the menu item, is used for saving the SelectedObject of the propertygrid, then the changes are not picked up. It appears to be related to the fact that the properties of the Person object are not updated unless the field in the propertygrid looses focus, and the ctrl+S shortcut doesn’t take away focus from fields in the propertygrid. Other developers, such as Mark Gilbert, have solved this issue by forcing away focus from the propertygrid, but this seems to be a bit of a hack, especially since it would be nice to keep the focus at the field. The Visual Studio developers apparently got it right, but I haven’t figured out how.

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  • Why is Django reverse() failing with unicode?

    - by JeffS
    Here is a django models file that is not working as I would expect. I would expect the to_url method to do the reverse lookup in the urls.py file, and get a url that would correspond to calling that view with arguments supplied by the Arguments model. from django.db import models class Element(models.Model): viewname = models.CharField(max_length = 200) arguments = models.ManyToManyField('Argument', null = True, blank = True ) @models.permalink def to_url(self): d = dict( self.arguments.values_list('key', 'value') ) return (self.viewname, (), d) class Argument(models.Model): key = models.CharField(max_length=200) value = models.CharField(max_length=200) The value d ends up as a dictionary from a unicode string to another unicode string, which I believe, should work fine with the reverse() method that would be called by the permalink decorator, however, it results in: TypeError: reverse() keywords must be strings

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  • Substituting Java for Groovy Little By Little

    - by yar
    I have been checking out Groovy a bit and I feel that moving a Java program to Groovy little by little -- grabbing a class and making it a Groovy class, then converting the method guts a bit at a time -- might be a relatively sane way to take advantage of some of the Groovy language features. I would also do new classes in Groovy. Questions: Is this a reasonable way to convert? Can I keep all of my public methods and and fields in Java? Groovy is "just" a superset, right? What kinds of things would you not do in Groovy, but prefer Java instead?

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  • Cascade Saves with Fluent NHibernate AutoMapping

    - by Ryan Montgomery
    How do I "turn on" cascading saves using AutoMap Persistence Model with Fluent NHibernate? As in: I Save the Person and the Arm should also be saved. Currently I get "object references an unsaved transient instance - save the transient instance before flushing" public class Person : DomainEntity { public virtual Arm LeftArm { get; set; } } public class Arm : DomainEntity { public virtual int Size { get; set; } } I found an article on this topic, but it seems to be outdated.

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  • How do I change variables from different classes?

    - by Dan T
    Before I delve into it, I'm very new to Android and I have just started learning Java last month. I've hit bumps while trying to develop my first simple app. Most of these hurdles were jumped thanks to random tutorials online. MY CODE IS VERY MESSY. Any tips are appreciated. The question above is quite broad, but this is what I want to do: It's a essentially a blood alcohol content calculator / drink keeper-tracker. Basic layout: http://i.imgur.com/JGuh7.jpg The buttons along the bottom are just regular buttons, not ImageButtons (had problems with that) Here's some example code of one: <Button android:id="@+id/Button01" android:layout_width="wrap_content" android:layout_marginRight="5dp" android:background="@drawable/addbeer"/> The buttons and TextView are all in main.xml. I have variables defined in a class called Global.java: package com.dantoth.drinkingbuddy; import android.app.Activity; public class Global extends Activity{ public static double StandardDrinks = 0; public static double BeerOunces = 12; public static double BeerPercentAlcohol = .05; public static double BeerDrink = BeerOunces * BeerPercentAlcohol; public static double BeerDrinkFinal = BeerDrink * 1.6666666; public static double ShotOunces = 1.5; public static double ShotPercentAlcohol = .4; public static double ShotDrink = ShotOunces * ShotPercentAlcohol; public static double ShotDrinkFinal = ShotDrink * 1.6666666; public static double WineOunces = 5; public static double WinePercentAlcohol = .12; public static double WineDrink = WineOunces * WinePercentAlcohol; public static double WineDrinkFinal = WineDrink * 1.6666666; public static double OtherOunces; public static double OtherPercentAlcohol; public static double OtherDrink = OtherOunces * (OtherPercentAlcohol * .01); public static double OtherDrinkFinal = OtherDrink * 1.6666666; public static double GenderConstant = 7.5; //9 for female public static double Weight = 180; public static double TimeDrinking = 60; public static double Hours = TimeDrinking / 60; public static double Bac = ((StandardDrinks / 2) * (GenderConstant / Weight)) - (0.017 * Hours); } The last variable is the important part. It calculates your BAC based on the factors involved. When I press the add beer button (Button01) I make it add 1 to StandardDrinks, simulating drinking one beer. The other variables in the Bac formula have values assigned to them in Global.java. The code that makes the beer button do stuff is in my regular class, drinkingbuddy.java: public class DrinkingBuddy extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Button button = (Button) findViewById(R.id.Button01); button.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { Global.StandardDrinks = Global.StandardDrinks + Global.BeerDrinkFinal; Toast.makeText(DrinkingBuddy.this, "Mmmm... Beer", Toast.LENGTH_SHORT).show(); } }); By my perception, StandardDrinks should now have a value of 1. However, when I click the Calculate BAC button (Button05) it merely outputs the variable Bac as if StandardDrinks was still set to 0. Here is the code for the Calculate BAC button (Button05): Button button4 = (Button) findViewById(R.id.Button05); button4.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { TextView texty; texty = (TextView) findViewById(R.id.texty1); texty.setText("Your BAC is " + Global.Bac ); } }); It outputs the following to the text view: "Your BAC is -0.017". This is the Bac value for if StandardDrinks was still 0, so obviously there is some problem communicating between the classes. Can anyone help me?? The other elements of the formula (weight, time spent drinking, and the alcohol %'s and such) are variables because I will ultimately allow the user to change those values in the settings. I've heard around the water cooler that global variables are not good programming style, but this is the closest I've come to getting it to work. Any other ways of doing it are very much welcomed!

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  • is it incorrect to define an hashcode of an object as the sum, multiplication, whatever, of all clas

    - by devoured elysium
    Let's say I have the following class: class ABC { private int myInt = 1; private double myDouble = 2; private String myString = "123"; private SomeRandomClass1 myRandomClass1 = new ... private SomeRandomClass2 myRandomClass2 = new ... //pseudo code public int myHashCode() { return 37 * myInt.hashcode() * myDouble.hashCode() * ... * myRandomClass.hashcode() } } Would this be a correct implementation of hashCode? This is not how I usually do it(I tend to follow Effective Java's guide-lines) but I always have the temptation to just do something like the above code. Thanks

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  • How does rolling back an application level transaction interact with SqlDataAdapter events in ADO.NE

    - by ilasno
    When utilizing the RowUpdated event in the SqlAdapter class, i'm assuming that it is raised directly following the return of the database interaction that executes the update. If that update is part of an application level transaction (utilizing the SqlTransaction class) which is then rolled back, does this affect or interact at all with the RowUpdated event? Or is the RowUpdated event not raised until after the transaction is committed (this seems unlikely, but i couldn't find documentation)? If RowUpdated has already been raised, and then the transaction is rolled back, any good ideas on how to adjust something that may have been done in RowUpdated that should then, also be rolled back?

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