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Subject: Re: [PHP-DEV] [DRAFT] RFC - array_column() function
From: aaron@aaronholmes.net (Aaron Holmes)

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The name makes sense, but would likely be confused with extract() 
http://us3.php.net/extract

On 6/25/2012 5:35 PM, Paul Dragoonis wrote:
> What about array_extract ?
>
> On Mon, Jun 25, 2012 at 9:31 PM, Aaron Holmes <aaron@aaronholmes.net 
> <mailto:aaron@aaronholmes.net>> wrote:
>
>     For what my .02 is worth, I imagine "plucking" an item out of an
>     array would not occur to a user-land developer as the proper
>     nomenclature for extracting all the values from an array with the
>     given key. At worst, this means many developers simply won't learn
>     about the function and continue to implement it in user-land.
>
>     When array_column was offered as the name, I immediately knew what
>     the purpose was, before checking the RFC.
>
>
>     On 6/25/2012 12:22 PM, Ben Ramsey wrote:
>
>         On 6/25/12 9:44 AM, Matthew Weier O'Phinney wrote:
>
>             On 2012-06-23, Stas Malyshev <smalyshev@sugarcrm.com
>             <mailto:smalyshev@sugarcrm.com>> wrote:
>
>                     I'm open to changing or aliasing the name to
>                     array_pluck(), if others
>                     are in agreement.
>
>
>                 I wouldn't know what "pluck" means here. "Column" is a
>                 clear word with
>                 established meaning. Let's not get too whimsical here.
>
>
>             Nothing whimsical about it at all, Stas. The definition is:
>
>                 Take hold of (something) and quickly remove it from
>             its place; pick
>
>             and synonyms include "pull" and "gather".
>
>             As Ralph noted, "column" is overloaded, as it has
>             connotations dealing
>             with databases as well as tables, and arrays often
>             represent neither.
>
>
>         I agree with Tom and Ralph that we should look at what others
>         are doing and pick a similar name. After searching on "pluck,"
>         though, I'm getting mixed results on how pluck is used:
>
>         In Rails, it looks like pluck is used for the purpose that
>         I've created array_column, but it's used with ActiveRecord as
>         a way to pull a column of results from the database (much like
>         PDOStatement::fetchColumn). See here:
>
>         https://github.com/rails/rails/commit/a382d60f6abc94b6a965525872f858e48abc00de
>
>
>         However, in Prototype.js and Underscore.js, pluck seems behave
>         more like array_map() in PHP:
>
>         http://api.prototypejs.org/language/Enumerable/prototype/pluck/
>         http://documentcloud.github.com/underscore/#pluck
>
>         Nevertheless, it would technically have the same effect as the
>         "column" functionality, since calling that method/property in
>         Javascript simply returns the value of the property or result
>         of the method call.
>
>         Also, the Python community has recently discussed adding pluck
>         for lists:
>
>         https://groups.google.com/forum/?fromgroups#!topic/python-ideas/p9qtUzg9zsk
>         <https://groups.google.com/forum/?fromgroups#%21topic/python-ideas/p9qtUzg9zsk>
>
>
>         It looks like they already have some functionality that
>         implements similar behavior, though:
>
>         >>> stooges=[{'name': 'moe', 'age': 40}, {'name': 'larry',
>         'age': 50}, {'name': 'curly', 'age': 60}]
>         >>> names=[guy['name'] for guy in stooges]
>         >>> print names
>         ['moe', 'larry', 'curly']
>
>         array_column/pluck in PHP would do the same:
>         $names = array_column($stooges, 'name');
>
>         If other languages/frameworks/libraries are using pluck to
>         mean exactly what this implementation means, then I agree with
>         changing the name to array_pluck, but if "pluck" also carries
>         meaning similar to array_map, then I don't want to confuse folks.
>
>         -Ben
>
>
>
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>


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