Search Results

Search found 42993 results on 1720 pages for 'static method'.

Page 157/1720 | < Previous Page | 153 154 155 156 157 158 159 160 161 162 163 164  | Next Page >

  • Java How to call method of grand parents?

    - by Arkaha
    Let's assume I have 3 classes A, B and C, each one extending the previous one. How do I call the code in A.myMethod() from C.myMethod() if B also implements myMethod? class A { public void myMethod() { // some stuff for A } } class B extends A { public void myMethod() { // some stuff for B //and than calling A stuff super.myMethod(); } } class C extends B { public void myMethod() { // some stuff for C // i don't need stuff from b, but i need call stuff from A // something like: super.super.myMethod(); ?? how to call A.myMethod(); ?? } }

    Read the article

  • Whats wrong with my backgroundwork method

    - by diver-d
    I am trying to get a background worker process working in a wpf application. it creates 2 files then crashes. BackgroundWorker worker = new BackgroundWorker(); worker.DoWork += delegate(object s, DoWorkEventArgs args) { CreateFile(i.ToString()); }; worker.RunWorkerAsync(); private void CreateFile(string fileName) { string path = string.Format(@"{0}\{1}.txt", directory, fileName); using (StreamWriter sw = new StreamWriter(path)) { sw.WriteLine(fileName); } } I get this error " The requested operation cannot be performed on a file with a user-mapped section open." what am I doing wrong? Any help would be great

    Read the article

  • Is yield break equivalent to returning Enumerable<T>.Empty from a method returning IEnumerable<T>

    - by Mike Two
    These two methods appear to behave the same to me public IEnumerable<string> GetNothing() { return Enumerable.Empty<string>(); } public IEnumerable<string> GetLessThanNothing() { yield break; } I've profiled each in test scenarios and I don't see a meaningful difference in speed, but the yield break version is slightly faster. Are there any reasons to use one over the other? Is one easier to read than the other? Is there a behavior difference that would matter to a caller?

    Read the article

  • PredicateBuilder "And" Method not working

    - by mikemurf22
    I have downloaded the predicate builder and am having a difficult time getting it to work with the entity framework. Here is my code: v_OrderDetail is the entity var context = new OrdersEntities(); Expression<Func<v_OrderDetail,bool>> whereClause = w => true; var predicate = PredicateBuilder.True<v_OrderDetail>(); predicate.And(w => w.Status == "Work"); var results = context.v_OrderDetail.AsExpandable().Where(predicate); When I look at the results I get back every order. The And predicate doesn't seem to take. When I look at the predicate.parameters.count it only shows 1. I'm not sure, but I would expect it to show 2 after I add the second one. Any help is greatly appreciated.

    Read the article

  • method names with fluent interface

    - by deamon
    I have a Permissions class with methods in fluent style like this: somePermissions.setRead(true).setWrite(false).setExecute(true) The question is, whether I should name these methods set{Property} or only {property}. The latter would look like this: somePermissions.read(true).write(false).execute(true) If I look at these methods separately I would expect that read reads something, but on the other hand it is closer to the intention to have something like named paramaters like in Scala: Permission(read=true, write=false, execute=true)

    Read the article

  • C# : Filtering data of data table using select method

    - by Royson
    I have data table containing one column as FilePath. FilePath D:\New folder\link.txt D:\New folder\SharepointMigration(Work Schedule).xls D:\New folder\my2\link.txt D:\New folder\my2\SharepointMigration(Work Schedule).xls D:\New folder\my2\my3\New Text Document.txt D:\New folder\Try.txt I am filtering my data table by DataRow[] dtRow = dataTable_FilesWithMetaData.Select("FilePath Like '" + sourcePath + "%'"); But it gives me all files and subfolder files. But i want only files not subfolders. How to write such type of filter expression..??

    Read the article

  • can you explain this jquery method from jquery.js

    - by mrblah
    Trying to understand how jquery works under the covers, what's the difference between: jQuery.fn and jQuery.prototype jQuery = window.jQuery = window.$ = function( selector, context ) { // The jQuery object is actually just the init constructor 'enhanced' return new jQuery.fn.init( selector, context ); }, and then: jQuery.fn = jQuery.prototype = { init: function( selector, context ) {

    Read the article

  • Compiler warning when passing NSError ** as a method parameter

    - by splicer
    I've been scratching my head about this for the last 4 hours, trying out all kinds of little experiments, but I can't seem to figure out what's going wrong. Could this be a compiler bug? Test.m: - (id)initWithContentsOfURL:(NSURL *)aURL error:(NSError **)error { if (!(self = [super init])) { return nil; } return self; } main.m: NSError *error; Test *t = [[Test alloc] initWithContentsOfURL:[NSURL fileURLWithPath:@"/"] error:&error]; Here's the compiler warning (from main.m): warning: incompatible Objective-C types 'struct NSError **', expected 'struct NSDictionary **' when passing argument 2 of 'initWithContentsOfURL:error:' from distinct Objective-C type I'm using the latest versions of Xcode and Snow Leopard.

    Read the article

  • Refactoring a C# derived class with method dependancies

    - by drelihan
    Hi Folks, I want to get your opinion on this. I have a class which is derived from a base class. I don't have control over the code in the base class and it is critical to the system that I derive from it. In my class I inherite two methods that are critical to the system and are used in pretty much every function, many times. I intend to refactor this derived class and extract some classes from it - this won't be a problem. What I'm not sure about is, is it worth extracting class if I have to constantly make call backs to my main class to access the two methods (or public wrappers to the methods)??? Thanks

    Read the article

  • NSKeyedArchiver save method ( that i made) crashed the iphone simulator

    - by Kevin
    i saw this approach on a tutorial, and the message is working for their example but when i implement this it does not work. from what i can tell the iphone simulator crashes when i do a [ self saveSettingsData]. TheSettings is class object that i declare and initialize in the appdelagate with these methods. the error says terminating due to uncaught exception. i am new to the iphone sdk and objective, so i really can't figure out what is going on thanks to any one who can help, i am ready to literally pull my hair out. (NSString *) SettingsDataFilePath { NSString * settingsDataFilePath ; NSArray * paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) ; NSString * documentsDirectory = [paths objectAtIndex:0] ; settingsDataFilePath = [[documentsDirectory stringByAppendingPathComponent: @"SetggggtingsData.plist" ] retain] ; return settingsDataFilePath ; } (void) saveSettingsData { [NSKeyedArchiver archiveRootObject:[TheSettings copy] toFile:[self SettingsDataFilePath]] ;

    Read the article

  • adding a js method

    - by Sorin Buturugeanu
    Hi! I have a js function that is named getID which is basically return document.getElementById(id) I want to make another function, getTag that would return getElementsByTagName. The part that I can't seem to manage is that I want to be able to call them like this: getID('myid').getTag('input') = so this would return all the input elements inside the element with the id myid Thanks! ps: getTag would also have to work if it's called by it's own, but then it would just return document.getElementsByTagName

    Read the article

  • WCF method that updates object passed in

    - by Georgia Brown
    Am I correct in thinking that if I have a WCF OperationContract takes in an object and needs to set a property on that object so the client gets the update, I need to declare it to return the object. e.g. given a datacontract: [DataContract] public class CompositeType { [DataMember] public int Key { get; set; } [DataMember] public string Something { get; set; } } this will not work with WCF: public void GetDataUsingDataContract(CompositeType composite) { composite.Key = 42; } this will work: public CompositeType GetDataUsingDataContract(CompositeType composite) { composite.Key = 42; return new CompositeType { Key = composite.Key, Something = composite.Something }; }

    Read the article

  • How do I change an existing XCode target from dynamic to static?

    - by Eric
    I'm working with an existing project that produces a dynamic library (Cocoa API). I'd rather generate a static library, but if I change the [Linking|Mach-O Type] field from "Dynamic Library" to "Static Library", both the Clean Project and Build Project complain that the target has an invalid MACH_O_TYPE value of 'staticlib'. Is there a straightforward way to get the build to produce a static .a file? Thanks, Eric

    Read the article

  • OleDbException in my update method

    - by Hamed Norouzi
    Why do I have this error? The error message is: Syntax error in INSERT INTO statement. I want to add a record to my database, but it isn't working. Where is the problem? The code is: using (OleDbConnection connection = new OleDbConnection(connectionString)) { OleDbDataAdapter DbDataAdabter = new OleDbDataAdapter(); DbDataAdabter.SelectCommand = new OleDbCommand("SELECT * FROM [Phone-Book]", connection); OleDbCommandBuilder cb = new OleDbCommandBuilder(DbDataAdabter); connection.Open(); DataRow dataRow = myDataset.Tables["salam"].NewRow(); dataRow[1] = textBox2.Text; dataRow[2] = textBox3.Text; dataRow[3] = textBox4.Text; dataRow[4] = textBox5.Text; dataRow.EndEdit(); myDataset.Tables["salam"].Rows.Add(dataRow); DbDataAdabter.Update(myDataset , "salam"); connection.Close(); connection.Dispose(); } }

    Read the article

  • Creating a bitmask parameter for a function or method

    - by synic
    I noticed a lot of Android functions have a parameter that you can pass in that's a bitmask, for different options, like on PendingIntent, you can pass in things like you can call getActivity() with PendingIntent.FLAG_CANCEL_CURRENT|PendingIntent.FLAG_NO_CREATE. I'm wondering how I can create a function that has a parameter like this?

    Read the article

  • Thread Local Storage and local method variables

    - by miguel
    In c#, each thread has its own stack space. If this is the case, why is the following code not thread-safe? (It is stated that this code is thread-safe on this post: Locking in C# class Foo { private int count = 0; public void TrySomething() { count++; } } As count is an int (stack variable), surely this value would be isolated to an individual thread, on its own stack, and therefore thread-safe? I am probably missing something here, but I dont understand what is actually in Thread Local Storage if not stack-based variables for the thread?

    Read the article

< Previous Page | 153 154 155 156 157 158 159 160 161 162 163 164  | Next Page >