Test for element in array

[Kirk McDonald]

Derek Parnell wrote:
> On Sat, 15 Jul 2006 02:46:24 +1000, Carlos Santander  
> <csantander619 at gmail.com> wrote:
> 
> 
>>
>> It was possible some time ago, but it got forbidden. What I've been  
>> doing (and I think others too) is:
>>
>> char [] [char []] whos;
>>
>> And set the element to both the key and the value. However, I admit I  
>> liked void [T].
> 
> 
> Actually I use
> 
>   bool[ char[] ] whos;
> 
>   whos["Capone"] = true;
> 

You can also have a sort of poor-man's multiset with:

int[ char[] ] ms;

One could easily wrap this with a more multiset-ish interface, but to 
add an item you just say:

++ms["moo"];

And to remove:

if (--ms["moo"] <= 0) ms.remove("moo");

-- 
Kirk McDonald
Pyd: Wrapping Python with D
http://dsource.org/projects/pyd/wiki