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Date: Mon, 20 Aug 2012 00:19:25 +0200
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To: Yasuo Ohgaki <yohgaki@ohgaki.net>
Cc: Rasmus Lerdorf <rasmus@lerdorf.com>, Rasmus Schultz <rasmus@mindplay.dk>, internals@lists.php.net
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Subject: Re: [PHP-DEV] re: removing an item from an array
From: colder@php.net (Etienne Kneuss)

On Sun, Aug 19, 2012 at 11:57 PM, Yasuo Ohgaki <yohgaki@ohgaki.net> wrote:
> 2012/8/18 Rasmus Lerdorf <rasmus@lerdorf.com>:
>> On 08/17/2012 05:21 PM, Rasmus Schultz wrote:
>>>>
>>>> if(($key = array_search($del_val, $messages)) !== false) {
>>>>     unset($messages[$key]);
>>>> }
>>>>
>>>> Nothing horrible here.
>>>>
>>>
>>> I disagree - this is (or should be) a simple, atomic operation...
>>> yet, you've got a function-call, an intermediary variable, a boolean test,
>>> and an unset statement repeating the name of the array you're deleting from.
>>>
>>> This should be a simple statement or function/method-call, and in most
>>> other languages it would be...
>>
>> Really? I can't think of a single language that has a call to remove an
>> element by value in a key-value hash. Do you have some examples? What do
>> you do with duplicates?
>>
>
> Ruby can do (using irb)
>
> ruby-1.9.2-p180 :007 > h = {"apple"=>150, "banana"=>300, "lemon"=>300}
>  => {"apple"=>150, "banana"=>300, "lemon"=>300}
> ruby-1.9.2-p180 :008 > h.delete_if { |k,v| v==300 }
>  => {"apple"=>150}
>
> May be we should have something like
>
> array_delete_if($array, function($v, $k=null) { if ($v == 300) return true; })

So array_filter?

>
> --
> Yasuo Ohgaki
> yohgaki@ohgaki.net
>
> --
> PHP Internals - PHP Runtime Development Mailing List
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>



-- 
Etienne Kneuss
http://www.colder.ch