Does D have too many features?

[Jesse Phillips]

On Sunday, 29 April 2012 at 20:50:02 UTC, Alex Rønne Petersen 
wrote:

>> - in operator
>
> Disagree. However, I do think it needs to made more useful (for 
> instance, I simply don't understand why I can't use in to test 
> for existence in an array).

Complexity of the operation. in on an array is not nearly the 
same as with an associative array.