Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:62267
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
Received-SPF: pass (pb1.pair.com: domain gmail.com designates 74.125.82.170 as permitted sender)
MIME-Version: 1.0
Sender: yohgaki@gmail.com
In-Reply-To: <CACQesk6-0P43_zJanx7vm7T3gk8pkkyBz9BtUkS4STrz5Ha=nA@mail.gmail.com>
References: <CADqTB_jyk7e8oZzxUQ42JA9PGjzgydddmsfwNx+6F-wD96mv6Q@mail.gmail.com>
 <502EB667.1020602@lerdorf.com> <CAGa2bXZFK7CUyf29ieBGhntqwceG1aWBpSL6N9MSJmB396CL=Q@mail.gmail.com>
 <CACQesk6-0P43_zJanx7vm7T3gk8pkkyBz9BtUkS4STrz5Ha=nA@mail.gmail.com>
Date: Mon, 20 Aug 2012 08:05:51 +0900
Message-ID: <CAGa2bXb3Kjr+YZB5pv90wYSEMTOgEHwNkMGwBux__kbsxe+zAA@mail.gmail.com>
To: Etienne Kneuss <colder@php.net>
Cc: Rasmus Lerdorf <rasmus@lerdorf.com>, Rasmus Schultz <rasmus@mindplay.dk>, internals@lists.php.net
Content-Type: text/plain; charset=ISO-8859-1
Subject: Re: [PHP-DEV] re: removing an item from an array
From: yohgaki@ohgaki.net (Yasuo Ohgaki)

2012/8/20 Etienne Kneuss <colder@php.net>:
> 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?

I'll use it or like for deleting, but the point of this thread is
"intuitive function for deleting element(s)"

array_delete($array, $value|callable)

would be nicer for users, perhaps.

--
Yasuo Ohgaki
yohgaki@ohgaki.net