Posted by jpluimers on 2011/03/10
Edit 20260804: the createguid.com domain got hijacked by a gambling site. In stead, use [Wayback/Archive] UUID Generator Online – Generate UUID v4 Values | TextBases which is client-side JavaScript based unlike the original page. Thanks Bakti for notifying me.
Other alternatives already had been listed in the comments below, but some have gune defunct since then. I have listed the still working ones:
Posted in .NET, Delphi, Development, JavaScript/ECMAScript, Scripting, Software Development | 14 Comments »
Posted by jpluimers on 2011/03/10
When you export different implementations of the same interface, importing the right one requires a “named contract“.
Like Danny Thorpe wrote: “Ah, named contracts. I had forgotten about that!”, indeed the first answer is nice!
–jeroen
via c# – PRISM + MEF — How to specify which export to use? – Stack Overflow.
Posted in .NET, Development, MEF, Software Development | Leave a Comment »
Posted by jpluimers on 2011/03/10
I usually forget the exact details on C# constraints when using generics.
One of the especially irritating things is that you cannot apply all the constraints you want.
Some built-in language features are covered by special types in the .NET framework class library, for instance enums.
Which means that code like this will not compile:
// Error 1 Constraint cannot be special class 'System.Enum'
public static T StringToEnum(string name) where T : System.Enum
{
return (T)Enum.Parse(typeof(T), name);
}
You need to replace it with the code below, which uses the fact that an enum is a ValueType (hence the struct constraint) implementing the interfaces IComparable, IFormattable and IConvertible constraints: Read the rest of this entry »
Posted in .NET, C#, C# 2.0, Development, Software Development | Leave a Comment »
The Wiert Corner - irregular stream of stuff 