Ruby on Rails
PhpArray_walk (Version #1)

PHP:
$array = array(1,2,3,4,5);
array_walk($array, ’square’);
function square($x) {
return $x * $x;
}

Ruby:
array = [1,2,3,4,5]
array.map!{|x| x * x}

PHP:
$array = array(1,2,3,4,5);
array_walk($array, ’square’);
function square($x) {
return $x * $x;
}

Ruby:
array = [1,2,3,4,5]
array.map!{|x| x * x}