Re: [PHP] xarray - The missing array functions you are looking for, implemented in Extension
- Date: Thu, 15 Oct 2015 12:40:18 +0800
- From: Lin Yo-an <cornelius.howl@xxxxxxxxx>
- Subject: Re: [PHP] xarray - The missing array functions you are looking for, implemented in Extension
On Oct 15, 2015, at 06:44, Ryan Pallas <derokorian@xxxxxxxxx> wrote:
> array_pluck is in the language, called array_column
array_pluck is designed to support dot expression, for example:
> array_remove is just array_filter, why do I need another function for that?
array_filter only passes value to the callback. in PHP 5.6, there is a new option to pass both key and value,
however PHP 5.5 doesn't have this option.
Implementing this function in extension make it possible.
> array_add - why do I need the overhead of a function call, when I can do $a[
> *key*] = *value*
The reason has been described in the document: array_add only adds data when the key doesn't exist.
You can treat it as a set operation.
$array = [ ];
array_add($array, "key", 10); // key => 10, return true
array_add($array, "key", 20); // key => 10 still, return false
> array_build - this seems neat, but I think it needs a better example, I can
> do the example already with array_combine(array_column(), array_column())
By using array_build, you can pass complex structure as the new value, or adding complex logic in the callback.
> array_each - this is just a foreach with an isolated scope and function
> overhead on every iteration, why would I want that?
Yeah I have to admit it's pretty much similar, however sometimes you want to pass a iteration handler from external,
and array_map returns a new array, array_each is faster than array_map because it's much lightweight and it doesn't return value.
> array_keys_join - while I like this, why doesn't it have the same argument
> order as implode/join (glue, array)?
The reason I put array as the first argument is, consistency. and actually the "glue" is optional, so you can simply ignore the argument.
$key = array_keys_join($array);
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php