Re: [discussion] add array_usearch()
Hi,
On Fri, Feb 7, 2014 at 2:36 PM, Yasuo Ohgaki <[email protected]> wrote:
> Hi all,
>
> On Fri, Feb 7, 2014 at 9:26 AM, Tjerk Meesters <[email protected]>wrote:
>
>> I'm not wildly enthusiastic about another magic flags parameter, but it's
>> an acceptable compromise for me. The slight advantage there is that
>> in_array() would be bestowed upon the ability to take a callback
>> function
>> as well. Something like:
>>
>> if (in_array('is_numeric', $array, SEARCH_NEEDLE_IS_CALLBACK)) { ... }
>>
>
> What we need is 'closure only callback'.
> If we have it, then we don't have to worry about string callback functions.
>
> if (in_array(function($elem) {return is_numeric(strstr($elem));}, $array))
> { ... }
>
> Why don't we have 'closure' as signature? It can do more than calling
> a function.
>
> bool in_array(closure $callback, array $ary);
>
> Cons would be we cannot search closures in $ary.
> Is there any use of searching closure?
>
That was my first attempt actually; if the first argument is a closure, use
that as the search callback. A few problems with that:
1) You can't use other types of callback, e.g. string or array.
2) [bc] You can't search through an array of closures.
3) [minor] the $strict argument becomes ambiguous.
The second problem can be mitigated by checking if $strict is given and
true, but it becomes rather messy.
> Regards,
>
> --
> Yasuo Ohgaki
> [email protected]
>
>
--
--
Tjerk
Thread (11 messages)