What Language Features Do You Miss In C#?

[Paulo Zemek]

In my case, actually, for every Foo<T> I also have an IFoo where the parameters are as object instead of T. I think java have such feature (I know, in java the implementation is completely different)... I think they use: Foo<?> to say that they don't know the type being used. It is slower than having it rightly typed, but it is faster than having it as dynamic or through reflection.

[thrakazog]

My answer is always multiple inheritance. Times that I would use it are rare. But when those times come up man do I ever want that.

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[Single Step Debugger]

Something from Transact SQL – the “in” clause. Something like:

if(myShoeSize in (16, 12, 17, 32) )
{
imAMutant = true;
}

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[AspDotNetDev]

There is .Contains.

Thou mewling ill-breeding pignut!

[PIEBALDconsult]

A goto case is not a goto. But, yes, I don't like break in a switch; in my opinion break should only be for loops only.

[PIEBALDconsult]

HashSet

[PIEBALDconsult]

Method-scoped variables like in VB (static). Defining Extension Methods by applying the Attribute like in VB (rather than this). A proper assignment operator like in Pascal := :-D A proper define directive like in C/C++ # define Pi 3.14 Support for enum in where clauses for generic types -- class C<T> where T : enum ... No default modifiers (public, private, virtual, sealed, etc.). Multiple Inheritence would be good too.

[Single Step Debugger]

Yes I know. We can also implement it in C++ using operator overloading. But the point is for a language future, not a pattern, collection or utility class.

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[Single Step Debugger]

This one is type dependent and not a language future but some class method. Same as Split() (very useful method by the way) or IsNullOrEmpty() for example.

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[PIEBALDconsult]

Yet HasSet allows other operations, such as union and intersection; would you argue for syntax to allow every such operation? I wouldn't.

[H Brydon]

What I would like to see in the language: - Destructors that destruct (not the silly Dispose() stuff) [you can easily trigger local garbage collection with an exit from scope] - Ability to use arrays with non-zero origin - inline operator||(), inline operator&&() which implement short circuit logic

-- Harvey

[Marc Clifton]

Multiple inheritance. Interfaces are useful as abstractions, but there are times I want to inherit concrete functionality from multiple classes. Marc

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[Brady Kelly]

I want lambda expressions, that can be evaluated at compile time, allowed in attributes, to avoid nasty string literals.

[Sander Rossel]

Having a generic type constraint on operators. Something where T : +, -, >, < Or something. Or just provide one easy way to work with numerics, for example: Something where T : numeric After which you can use +, -, >, < etc. by default and T can be int16, int 32, int64, single, byte, double, decimal or an unsigned of those.

It's an OO world.

public class Naerling : Lazy<Person>{
public void DoWork(){ throw new NotImplementedException(); }
}

[Chris C B]

On error resume next

[JeremyBob]

+1 from me

[m0sa]

- aspect oriented programming (PostSharp...) - mixin support - serializable expressions

[Marach]

you can type several 'case' statements one after the other. contrived example:

int number = GetNumberBetween1And5();
string text = null;
switch( number ) {
case 1:
text = "1";
break;
case 2:
case 3:
case 4:
text = "2 or 3 or 4";
break;
case 5:
text = "5";
break;
}

is that type of fall-through what you said you're missing?

[OriginalGriff]

I agree - it isn't. But...it is a out-of-structure code flow indicator, which can easily create the same spaghetti code as a goto. So on balance, while I found the no-drop-through rule limiting at first, I don't miss it so much now. I just restructure the code to not need it in the same way that I don't need goto itself. And I definitely agree on break - the switch version should have used a different word: "esac" or "join" perhaps.

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[OriginalGriff]

Because I have A Dangerous Mind[^] :-D

If you get an email telling you that you can catch Swine Flu from tinned pork then just delete it. It's Spam.