How to recovery source python code (.py) from .pyo file?
I need to convert a compiled python code (.pyo) to its source . I look in depython.net, but there is a problem. A warning; "File version older than 2.4." What should I do? Thanks. ...
extension-methods
Extensions methods and forward compatibilty of source code.
Hi, I would like solve the problem (now hypothetical but propably real in future) of using extension methods and maginification of class interface in future development. Example: /* the code written in 17. March 2010 */ public class MySpecialList : IList<MySpecialClass> { // ... implementation } // ... somewhere elsewhere ... MySp...
How do I extend in my class a Dom element, in mootools
I want to create a Class, say MyDiv, which inherits from the original DOM DIV element. Later in my code I would like to use it like that: $('a-container').adopt(new MyDiv('my own set of params')); I am missing the exact syntax to do it. ...
how to use an extension method from a code block in aspx page
I have an extension method which I can use from the .cs codebehind of an aspx page, but if I try to do it in a code block in the aspx, it can't find the extension method. Is there something I need to add to the page? ...
string extension method - Not available through WebMethod
I've written a simple extension method for a web project, it sits in a class file called StringExtensions.cs which contains the following code: using System; using System.Collections.Generic; using System.Linq; using System.Web; /// <summary> /// Useful extensions for string /// </summary> static class StringExtensions { /// <summa...
How do you manage the namespaces of your extension methods?
Do you use a global, catchall namespace for all of your extension methods, or do you put the extension methods in the same namespace as the class(es) they extend? Or do you use some other method, like an application or library-specific namespace? I ask because I have a need to extend System.Security.Principal.IIdentity, and putting t...
What is the motivation behind "Use Extension Methods Sparingly?"
I find them a very natural way to extend existing classes, especially when you just need to "spot-weld" some functionality onto an existing class. Microsoft says, "In general, we recommend that you implement extension methods sparingly and only when you have to." And yet extension methods form the foundation of Linq; in fact, Linq was ...
Why is my Extension Method not showing up in my test class?
I created an extension method called HasContentPermission on the System.Security.Principal.IIdentity: namespace System.Security.Principal { public static class IdentityExtensions { public static bool HasContentPermission (this IIdentity identity, int contentID) { // I do stuff here ...
ASP.Net MVC view unable to see HtmlHelper extension method
Hi everyone, We're going through an ASP.Net MVC book and are having trouble with using an extenstion method within our view. The Extension method looks like this: using System; using System.Runtime.CompilerServices; using System.Web.Mvc; namespace MvcBookApplication { public static class HtmlHelperExtensions { public static s...
What is the best way to attach static methods to classes rather than to instances of a class?
If I have a method for calculating the greatest common divisor of two integers as: public static int GCD(int a, int b) { return b == 0 ? a : GCD(b, a % b); } What would be the best way to attach that to the System.Math class? Here are the three ways I have come up with: public static int GCD(this int a, int b) { return b == ...
Setting a WebControls TabIndex based on the ControlId of another control
I have an ASP.NET Webforms site that is regularly having features added. The majority of time a new WebControl is added to the page and I need to increment the TabIndex to all subsequent controls on the page. I'd prefer a more robust solution than choosing an arbitrary gap between the initial assigned tab indexes. Setting the tab indexe...
Why doesn't EnumerableRowCollection<DataRow>.Select() compile like this?
This works: from x in table.AsEnumerable() where x.Field<string>("something") == "value" select x.Field<decimal>("decimalfield"); but, this does not: from x in table.AsEnumerable() .Where(y=>y.Field<string>("something") == "value") .Select(y=>y.Field<decimal>("decimalfield")); I also tried: from x in table.AsEnumerable() .Where(y=...
IQueryable<T> Extension Method not working
How can i make an extension method that will work like this public static class Extensions<T> { public static IQueryable<T> Sort(this IQueryable<T> query, string sortField, SortDirection direction) { // System.Type dataSourceType = query.GetType(); //System.Type dataItemType = typeof(object); //if (data...
Having trouble with extension methods for byte arrays
I'm working with a device that sends back an image, and when I request an image, there is some undocumented information that comes before the image data. I was only able to realize this by looking through the binary data and identifying the image header information inside. I originally had a normal method and converted it to an extensi...
C# Thread-safe Extension Method
Hello All, I may be waaaay off, or else really close. Either way, I'm currently SOL. :) I want to be able to use an extension method to set properties on a class, but that class may (or may not) be updated on a non-UI thread, and derives from a class the enforces updates to be on the UI thread (which implements INotifyPropertyChange...
Lambdas within Extension methods: Possible memory leak?
I just gave an answer to a quite simple question by using an extension method. But after writing it down i remembered that you can't unsubscribe a lambda from an event handler. So far no big problem. But how does all this behave within an extension method?? Below is my code snipped again. So can anyone enlighten me, if this will lead t...
How to specify generic method type parameters partly
I have an extension method like below: public static T GetValueAs<T, R>(this IDictionary<string, R> dictionary, string fieldName) where T : R { R value; if (!dictionary.TryGetValue(fieldName, out value)) return default(T); return (T)value; } Currently, I can use it in the following way: var dictionary = n...
can't access to an extension method with UrlHelper parameter in controller! Vice versa in view have access
why defined extension method with UrlHelper don't added in Url.EXTENSIONMETHOD when i want to use it in controller! but i have access to it in view? public static string Home(this UrlHelper helper) { return helper.RouteUrl("ABC", new { controller = "ABC", Action = "Default" }); } i haven't access: public ActionResult Default() { ...
Extension Methods not Recognized
What is necessary to have an extension method honored when it exists in an imported assembly? I built one in a class library project but it is not recognized in my web project which references the library. All the other classes and methods in the library are honored and visible but this extension method is not. The extension method is ...
What's the meaning of the angle brackets on LINQ methods in Intellisense? (Contains<>, Count<>, Distinct<>, etc.)
They usually involve generics. But some methods with generics don't have them, and not all extension methods have them. They've just "been there" since day one, we've all seen them; but I realized I still don't know what they mean, and I can't find the answer anywhere. Now it's really bugging me. Google just turns up results that a...