New in C#4

[Christopher Wright]

Bruno Medeiros wrote:
> Ary Borenszweig wrote:
>> Robert Fraser escribió:
>>> Denis Koroskin wrote:
>>>> I once had the following Color class:
>>>>
>>>> class Color
>>>> {
>>>>     this (byte alpha, byte red, byte green, byte blue) { ... }
>>>> }
>>>>
>>>> and used it as follows:
>>>>
>>>> Color c = new Color(255, 0, 255, 0); // opaque green color
>>>>
>>>> After refactoring, alpha became last argument in ctor:
>>>>
>>>>     this(byte red, byte green, byte blue, byte alpha) { ... }
>>>>
>>>> Note that this change didn't raise any compilation error, nothing 
>>>> that would notify my of possible error.
>>>>
>>>> Needless to say that I didn't enjoy searching all the code that used 
>>>> Color to reorder parameters (although some artifact were nice :)
>>>> It would save me quite some time if I initialized all my instances 
>>>> as follows:
>>>>
>>>> Color c = new Color(alpha: 255, red: 0, green: 255, blue: 0);
>>>>
>>>> Now compiler could raise an error if parameters order was changed. 
>>>> Even better - compiler could reorder parameters for me automatically 
>>>> if given that all of them are specified and no params ommited 
>>>> (unlike Python). This makes code more robust to refactoring.
>>>
>>> The first thing  I thought of when reading this is Eclipse JDT's 
>>> "Change Method Signature" refactoring that will look up all the calls 
>>> in your project & automatically reorder the parameters for you.
>>
>> Me too. :-)
> 
> Of course I also ate a piece of that cake. ^^
> 
> I keep getting the impression that we 3 are the only people in the D NG 
> that have used JDT extensively.
> That's unfortunate because I feel most people here don't realize how 
> much an IDE like JDT (or something comparable, like IntelliJ IDEA, but 
> not VS) can shape and improve the development workflow (and thus have 
> potential implications in language design).

I haven't used JDT very much -- I can't stand the standard library in 
Java, so I try to avoid it.

I've used Visual Studio with Resharper. From what I've seen, Resharper 
is much better than JDT. It might just be a matter of default 
configurations, but that's still a strong advantage.

Still, Resharper costs $250 on top of the cost of Visual Studio, and it 
won't work with the free versions of VS.

However, when working with C# on a large codebase, I'm significantly 
faster when working with Resharper. Enough so that if Resharper is not 
functioning, getting it in working order is my top priority.