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  • How do I "valueOf" an enum given a class name?

    - by stevemac
    Lets say I have a simple Enum called Animal defined as: public enum Animal { CAT, DOG } and I have a method like: private static Object valueOf(String value, Class<?> classType) { if (classType == String.class) { return value; } if (classType == Integer.class) { return Integer.parseInt(value); } if (classType == Long.class) { return Long.parseLong(value); } if (classType == Boolean.class) { return Boolean.parseBoolean(value); } // Enum resolution here } What can I put inside this method to return an instance of my enum where the value is of the classType? I have looked at trying: if (classType == Enum.class) { return Enum.valueOf((Class<Enum>)classType, value); } But that doesn't work.

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  • Good Design for Initialization of Static Array

    - by jplot
    I have a question regarding good design in C++. I have a class A, and all objects of this class use an integer array of constant values (they should share the same array, as their values are constant). The array needs to be computed (just once) before any object A. I thought about having another class B which contains the integer array as a static member, an init() method which would fill this array according to some formula and a static boolean flag initialized (if this variable if true then the init() method would do nothing), but I'm not sure this is the best way to solve my design issue. So my question is, what would be a good design/way to accomplish this ? Thanks in advance.

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  • In yii how to access other tables fields

    - by user1636115
    I am creating project in yii framework. I am having table as- Qbquestion QbquestionOption -questionId -optionId -question -questionId -userId -option -isPublished -isAnswer In QbquestionOption controller i want to access Qbquestion tables fields. I had written quesry as- $Question=Qbquestion::model()->findAllByAttributes(array("questionId"=>$number)); where $number is some random number. When i am using its fields as= $Question-isPublished then its giving error as "trying to get access to property of non-object" Statement var_dump($Question) is showing all record and all values of Qbquestion table. So how can i access records? Please help me

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  • Hibernate and mssql inner join rowcount

    - by ez2sarang
    I am struggling with Hibernate Criteria. My aim is to create the following request using Hibernate Criteria : select count(*) as y0_ from PInterface this_ inner join Product product2_ on this_.product_id=product2_.id where this_.product_interface_type_id=? Here is my code: @Entity @Table(name = "PInterface") public class PInterface { @Id @GeneratedValue @Column(name = "id", nullable = false, insertable = false, updatable = false) private int id; @Column(name = "product_id") private int productId; @Column(name = "product_interface_type_id") private int type; @ManyToOne(optional=false) @JoinColumn(name = "product_id", referencedColumnName = "id", insertable=false, updatable=false) private Product product; } @Entity @Table(name = "Product") public class Product { @Id @GeneratedValue @Column(name = "id", nullable = false, insertable = false, updatable = false) private int id; private String name; } //Criteria is : Object criteria = sessionFactory.getCurrentSession() .createCriteria(PInterface.class) .add(Restrictions.eq("type", 1)) .setProjection(Projections.rowCount()) .uniqueResult() ; However, the results ... select count(*) as y0_ from PInterface this_ where this_.product_interface_type_id=? Where Inner join? Thank you for help!

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  • AS3: Element stays on stage after manipulating the index(depth)

    - by o15a3d4l11s2
    Here is the problem I have: after I change the index of one movieclip using this code oldIndex=getChildIndex(DisplayObject(e.target)); setChildIndex(DisplayObject(e.target), numChildren - 1); when I give the object its old index setChildIndex(DisplayObject(e.target), oldIndex); and go to another frame of the movie, this element I have changed the index of stays on top of all elements on the new frame. My question is am I doing something wrong and if not, what can I do so that this element stays only in the frame it is placed.

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  • c++ link temporary allocations in fuction to custom allocator?

    - by user300713
    Hi, I am currently working on some simple custom allocators in c++ which generally works allready. I also overloaded the new/delete operators to allocate memory from my own allocator. Anyways I came across some scenarios where I don't really know where the memory comes from like this: void myFunc(){ myObj testObj(); ....do something with it } In this case testObj would only be valid inside the function, but where would its memory come from? Is there anyway I could link it to my allocator? Would I have to create to object using new and delete or is there another way? Thanks

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  • jQuery extend $.fn and calling method syntax

    - by MBax
    I understand that you call a method like this when you are extending $.fn. ( $ == jQuery ) //$("div").myMethod(); $.fn.extend({ myMethod: function(){...} }); And like this when you extend the jQuery Object: //$.myMethod2(); $.extend({ myMethod2: function(){...} }); But I don't quite understand what the $() is doing here: $().functionName({ something: 'something' }).myMethod(); Does it have to do with the fact the method is being called including the function name? Thanks in advance and hope this makes sense.

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  • Executing multiple update statements in PHP

    - by theband
    I have three update statements to be executed in PHP, i am getting the values of all these as return parameters. How to execute each statement independely and finally show the end user the result that it has been successfully updated. <?php public function name($parameter1,$parameter2.... $parametern) { $records=array(); $sql=""; $sql2=""; $sql3=""; $result=mysql_query($sql); //return $result; if(!$result){throw new Exception(mysql_error());} if(mysql_num_rows($result)==0){return $records;} while($row=mysql_fetch_assoc($result)){$records[]=$row;} return $records; } ?> Then how finally we can get the result in my row object.

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  • C# background worker while loop

    - by Mike
    What i'm trying to create is a background worker that executes a few processes every 30seconds. But I want this while loop to execute for as long as the program is launched. here is what I am using: private void watcherprocess1() { backgroundWorker1.RunWorkerAsync(); } private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e) { while( Thread.Sleep(30000); specficView2(); makeFormlist2(); populateListview2(); } My main issue is ai can think of a good while loop to keep this running

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  • Get size of jar file loaded by urlclassloader

    - by Aliya
    Does anybody know a good way to find the file size that is dynamically loaded by urlclassloader? I am using the urlclassloader in the following manner, but need to keep track of how much bandwidth is being used. URLClassLoader sysloader = (URLClassLoader) ClassLoader .getSystemClassLoader(); Class<URLClassLoader> sysclass = URLClassLoader.class; Method method = sysclass.getDeclaredMethod("addURL", parameters); method.setAccessible(true); method.invoke(sysloader, (Object[]) urls); Thanks in advance!

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  • JavaScript not changing display type or color in IE

    - by user445359
    I am trying to switch a series of blocks between "none" and "block" based on the OnMouseOver property and to change the title of the selected list to yellow at the same time. The JavaScript code I have for this is: function switchCat(cat) { var uls = document.getElementsByClassName('lower-ul'); var titles = document.getElementsByClassName('lower-cat-title'); for (var i=0;i<uls.length;i++) { uls[i].style.display = 'none'; titles[i].style.color = 'white'; } if (cat != -1) { var wanted = document.getElementById('lower-cat-'+cat); var wantedTitle = document.getElementById('lower-cat-title-'+cat); wanted.style.display = 'block'; wantedTitle.style.color = 'yellow'; } } It works with Chrome, Opera, and Firefox, however, it does not work with IE. When I test it in IE I get the error "Object doesn't support this property or method." Does anyone know what I am doing wrong?

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  • Is possible to remove an event listener in actionscript 3 (flash) ??

    - by DomingoSL
    In the frame 1 of my movie, part of my code is: stage.addEventListener(Event.RESIZE, resizeHandler); It works all fine, but when i go to the frame 2 the listener is still there but the function resizeHandler is not anymore (and i dont want it). So the console output this: TypeError: Error #1009: Cannot access a property or method of a null object reference. at index_fla::MainTimeline/resizeHandler() at flash.events::EventDispatcher/dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at flash.display::Stage/dispatchEvent() at index_fla::MainTimeline/frame2() Is possible to remove the event listener on the frame 2? Thanks!!!

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  • C# string to combobox issues

    - by Mike
    What i'm trying to do is read in a header row of a file to a combobox. Here is my code: private void button4_Click(object sender, EventArgs e) { string[] startdelim = File.ReadAllLines(textBox1.Text); int counter = 1; foreach (string delim in startdelim) { if (counter == 1) { string removedelim = delim.Replace("\"", ""); string[] lines = removedelim.IndexOf(","); foreach (string line in lines) { comboBox1.Items.Add(line); } } counter++; } for some reason it keeps telling me Error Cannot implicitly convert type 'int' to 'string[]' at string[] lines = removedelim.IndexOf(",");

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  • PHP DateTime accept multiple formats?

    - by John Smith
    I'm trying to construct a DateTime object with multiple accepted formats. According to the DateTime::createFromFormat docs, the first parameter (format) must be a string. I was wondering if there was a way to createFromFormats. In my case, I want the year for my format to be optional: DateTime::createFromFormat('Y-m-d', $date); DateTime::createFromFormat('m-d', $date); so that a user can input just 'm-d' and the year would be assumed 2013. If I wanted multiple accepted formats, would I have to call createFromFormat each time? Shortest thing for my scenario is: DateTime::createFromFormat('m-d', $date) ?: DateTime::createFromFormat('Y-m-d', $date);

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  • SQL - Link to more table information

    - by BioXhazard
    I have a datagrid with 3 of 5 fields from a SQL table. The first databound was changed to an asp:hyperlink so the field can be clicked. What I want to do is, when the user clicks an object in the field, it sends the ID to another page. From there, it uses the request in order to display the required information which is found in the same SQL table. For example: User clicks on a cell in the first column, it brings them to a page with more information on that cell.

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  • C# Making private instance variable accesable (jagged array)

    - by Chris
    Hello, In a attempt to put some more oop in a program i am looking to make a private instance variable in one class (object) accesable to a class. private byte [][] J; All those code refers to this jagged array with this. Now in the other class i putted all the for loops along with the consolewritlines to display the wanted results. Basicly it says "the name J does not exist in the current context" But how exactly do i make this J accesable? I have tried with get and set but i keep getting 'cannot convert to byte to byte[][]' Also what kind of cyntax would i need with get and set? Something along like this? Or would i need several more steps? : public Byte JArray get { return J; } //can converrt to byte here set { J = value; } //cannnot convert to byte here Kind regards

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  • Hilighting div tag in Masterpage on redirection to content page

    - by user1713632
    I have a link in Master page within a div tag. I want to highlight the div when I am clicking the link, in order to redirect to some content page. I have written the following code: <li> <div id="div_test" runat="server"> <asp:LinkButton ID="lnk_test_menu" Font-Underline="false" ForeColor="Black" runat="server" Text="Test Link" CausesValidation="false" onclick="lnk_test_menu_Click1" > </asp:LinkButton></div> </li> Code in the cs page: protected void lnk_test_menu_Click1(object sender, EventArgs e) { div_test.Attributes.Add("class", "testSelected"); Response.Redirect(Test.aspx"); } The div in the master page is not being selected on redirection. Could anybody help me on this?

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  • Simple: replace div with ajax content (jquery)

    - by user469110
    I followed this thread. I now have: <a href="#" onclick="$('#gc').load('test');">reload</a>... </span> <div id="gc"> empty </div> This is what I am getting: Uncaught exception: TypeError: Cannot convert '$('#gc')' to object Error thrown at line 1, column 0 in <anonymous function>(event): $('#gc').load('test'); What is that? I thought I would be able to select a div and replace the contents with load()?

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  • I having a problem with the mysqli free() member function

    - by neo skosana
    Hi I have code where I connected to the database like so: $db = new mysqli("localhost", "user", "pass", "company"); Now when I query the database like so: //query calls to a stored procedure 'user_info' $result = $db->query("CALL user_info('$instruc', 'c_register', '$eml', '$pass', '')"); //I use the $result This query works well. Now when I try and free that result like so: $result->free(); or $result->close(); It seems like it doesn't do anything because $result is still set. When I try to run another query it gives me this error: Fatal error: Call to a member function fetch_array() on a non-object in... For me to run this other query I have to close the db conection and connect again, then it will work. I want to know if there is a way I could run the other query without having to disconnect and reconnect to the database. thanks in advance.

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  • possible to use <img> as <div>?

    - by FatDogMark
    for example if I want to put an image wrap another object,possible? <img src='pic.png'> <div id='block'> <p>Somebody </div> </img> I know I should just use div and background-image but I want to use the property auto img{width:50%; height:auto;} If I use div , using auto won't works because it won't know the background-image size and will not adjust the div depends on the image ratio aspect.

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  • Python finding index in a array

    - by NIH
    I am trying to see if a company from a list of companies is in a line in a file. If it is I utilize the index of that company to increment a variable in another array. The following is my python code. I keep getting the following error: AttributeError: 'set' object has no attribute 'index'. I cannot figure out what is going wrong and think the error is the line that is surrounded by **. companies={'white house black market', 'macy','nordstrom','filene','walmart'} positives=[0 for x in xrange(len(companies))] negatives=[0 for x in xrange(len(companies))] for line in f: for company in companies: if company in line.lower(): words=tokenize.word_tokenize(line) bag=bag_of_words(words) classif=classifier.classify(bag) if classif=='pos': **indice =companies.index(company)** positives[indice]+=1 elif classif=='neg': **indice =companies.index(company)** negatives[indice]+=1

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  • why can not see my method if i implamented interface to normal class?

    - by Phsika
    i can not see MyLoad.TreeLoader(.... but why i can not see? i implemented iloader to TreeViewLoad. i should see TreeLoader why? namespace Rekursive { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { //treeView1.Nodes.Add("Test"); iloader MyLoad = new TreeViewLoad(); MyLoad.loader("test", treeView1, 1); // i can not see MyLoad.TreeLoader(.... but why i can not see? // i implemented iloader to TreeViewLoad. i should see TreeLoader why? //TreeViewLoad myloader = new TreeViewLoad(); } } interface iloader { void loader(string nodeName, TreeView myTre, int id); } class TreeViewLoad : iloader { public void TreeLoader(TreeView tre) { // i will call loader... } public void loader(string nodeName, TreeView myTre, int id) { myTre.Nodes.Add(nodeName + id.ToString()); if (id

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  • How to make a SUM of Dictionary Value nested into a list with LINQ ?

    - by user551108
    Hi All, I have a product object declared as : Product { int ProductID; string ProductName; int ProductTypeID; string ProductTypeName; int UnitsSold Dictionary <string, int> UnitsSoldByYear; } I want to make a sum on UnitsSold and UnitsSoldByYear properties with a Linq query but I didn't know how to make this kind of sum on a dictionary ! Here is my begining linq query code : var ProductTypeSum = from i in ProductsList group i by new { i.ProductTypeID, i.ProductTypeName} into pt select new { ProductTypeID= pt.Key.ProductTypeID, ProductTypeName= pt.Key.ProductTypeName, UnitsSoldSum= pt.Sum(i => i.UnitsSold), // How to make a Dictionary sum here } Thank you for your help !

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  • What type of data should I send to view?

    - by Vizualni
    Hello, this question I've been asking myself since the day I started programming in MVC way. Should I send to view arrays filled with data or should I send it as on objects I retrieved from database? My model returns me data as objects. What would be the best way to create such a thing? $new_data = $model->find_by_id(1); echo $new_data->name; $new_data->name= "whatever"; $new_data->save(); For example. view.php echo $object->name; or echo $array['name'] Language is php :).

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