/**
* Treats arguments as an one-dimensional array
* @example Converting a multi-dimensional array into one-dimensional
* ```php
* $var = array (
* 'A',
* array (
* 'B',
* array (
* 'C'
* ),
* 'D'
* ),
* 'E'
* );
* var_export( arr::flat($var) );
* ```
* @example Converting multiple arguments into an one-dimentional array
* ```php
* $r = arr::flat('A', 'B', array ('C', 'D'), 'E', 'F');
* var_export( $r );
* ```
* @param mixed $X Any number of parameters are accepted
* @return array
*/
static function flat($X)
{
$r = array();
$args = func_num_args() > 1 ? func_get_args() : (type::is_iterable($X) ? $X : array($X));
foreach ($args as $iArg) {
if (is_array($iArg)) {
$r = array_merge($r, arr::flat($iArg));
} else {
$r[] = $iArg;
}
}
return $r;
}
