D dropped in favour of C# for PSP emulator

[Andrei Alexandrescu]

On 5/11/12 5:43 PM, Timon Gehr wrote:
> On 05/11/2012 10:29 PM, Jonathan M Davis wrote:
>> On Friday, May 11, 2012 21:02:46 Alex Rønne Petersen wrote:
>>> On 11-05-2012 20:34, Mehrdad wrote:
>>>> On Friday, 11 May 2012 at 18:25:17 UTC, Jonathan M Davis wrote:
>>>>>> Actually, that is a WAT even for somebody coming from C/C++.
>>>>>
>>>>> Really? That's pretty much exactly what I would have expected, and it
>>>>> would
>>>>> really suck if it returned a bool. It's like what you get with find on
>>>>> std::map, only it's a pointer instead of an iterator.
>>>>>
>>>>> - Jonathan M Davis
>>>>
>>>> Again, try to see it from the perspective of a Python user, not a
>>>> C++ user.
>>>
>>> Speaking of which, 'in' on arrays.........
>>>
>>> *hint hint*
>>
>> Except that it would break the generally expected algoritmic
>> complexity of in,
>> so it'll never happen ( O(n) for arrays, whereas the worst case that
>> would be
>> acceptable would be O(lg n) - e.g. what a binary tree could achieve).
>>
>> - Jonathan M Davis
>
> The main use case I see is replacing tedious
>
> if(foo == 'a' || foo == 'b' || foo == 'c' || foo == 'd') { ... }
>
> with
>
> if(foo in "abcd") { .... }
>
> And here the counter-argument cannot apply, because the operation is in
> O(1).

Yes, "in" for statically-sized arrays does make sense because the 
complexity if bound at compilation time.

Andrei