Some useful utility functions that work on Arrays.
The easiest way to use this is: use Nano4\Utils\Arry; Then just call the functions like: Arry::swap($array, 2, 4);
You can make an object instance, but it's not needed.
rename_key(array $array, string $curname, string $newname, boolean $overwrite = False)
Rename an array key.
This operates directly on the array. It returns true on success, and false on failure.
| array | $array | The array to operate on. |
| string | $curname | Current key name. |
| string | $newname | New key name. |
| boolean | $overwrite | Optional, overwrite existing keys. |
cartesian_product(array $arrays) : array
Generate a Cartesian product from a set of arrays.
Taken from http://www.theserverpages.com/php/manual/en/ref.array.php Reformatted to fit with Nano.
| array | $arrays | An array of arrays to get the product of. |
An array of arrays representing the product.
merge_into_each(mixed $x, array $arrays) : array
Merge an item into a set of arrays.
A part of subsets(), taken from same example.
| mixed | $x | Item to merge into arrays. |
| array | $arrays | Array of arrays to merge $x into. |
A copy of original array, with merged data.
powerset(array $array) : array
Generate a powerset.
Generate an array of arrays representing the powerset of elements from the original array.
Based on code from: http://bohuco.net/blog/2008/11/php-arrays-power-set-and-all-permutations/
| array | $array | The input array to generate powerset from. |
An array of arrays representing the powerset.