generic indexOf() for arrays ?

[Ary Manzana]

On 4/28/12 3:51 AM, Brad Anderson wrote:
> On Friday, 27 April 2012 at 19:49:33 UTC, M.Gore wrote:
>> I'd like to know if there's a generic function over arrays to find the
>> index of a specific elemnt therein, something like, say:
>>
>> int indexOf(S) (in S[] arr, S elem);
>>
>> which works the same way the std.string.indexOf() function works...
>> couldn't find anything in the std.array module for this scenario.
>> Would be nice to have this functionality built-in somehow.
>>
>> Or is there a completely different / better approach to this in D?
>> Thx, M.
>
> countUntil in std.algorithm should work fine.
>
> http://dlang.org/phobos/std_algorithm.html#countUntil
>
> Regards,
> Brad Anderson

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sizediff_t indexOf(alias pred = "a == b", R1, R2)(R1 haystack, R2 needle);

Scheduled for deprecation. Please use std.algorithm.countUntil instead.

Same as countUntil. This symbol has been scheduled for deprecation 
because it is easily confused with the homonym function in std.string.
---

But isn't it the same funcionality? Why use a different name for the 
same funcionality?