'in' for arrays?

[Alexander Panek]

Lionello Lunesu wrote:
> Egor Starostin wrote:
>>> I keep wanting to say
>>>    if (val in somearray) {
>>>    }
>> Me too.
>>
>> For example, in Python I can write
>>
>> if val in ('off','disable','no')
> 
> OK, granted, if (val in ["off","disable","no"]) does look cool, but a 
> switch(val) would still be faster (uses binary search if I'm not mistaken).
> 
> Maybe D should get an alternative "if" for this construct:
> 
> switch(val) {
>   case "off","disable","no":
>      // code here
>   default:
>      break;
> }
May I ask in what way this is different from:

switch ( val ) {
     case "off":
     case "disable":
     case "no":
         // code here
         break;
}

?

> 
> Anyway, supporting "in" for normal arrays has my vote. In my post I just 
> mentioned a possible concern.
> 
> L.

Kind regards,
Alex