Re: xarray - The missing array functions you are looking for, implemented in Extension

New function added to xarray extension: $array = [ "created_at" => ... "updated_at" => .... ]; array_keys_replace($array, [ "_at" => "_on", ]); > On Oct 15, 2015, at 12:40, Lin Yo-an <cornelius.howl@gmail.com> wrote: > > On Oct 15, 2015, at 06:44, Ryan Pallas <derokorian@gmail.com> wrote: >> >> array_pluck is in the language, called array_column > > array_pluck is designed to support dot expression, for example: > > array_pluck($array, "parent.child.child1.attr"); > >> 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);