Javascript swizzle generator for Ryan.js

swizzle.js

function generateSwizzles (){
    var allSwizzles = [];
    var perm = function(list, ret){
        if (list.length == 0) {
            var swizzleMember = ret.join('') + " : [" + ret.join(',') + ']'
            allSwizzles.push(swizzleMember);
            return;
        }
        for (var i = 0; i < list.length; i++) {
            var x = list.splice(i, 1);
            ret.push(x);
            perm(list, ret);
            ret.pop();
            list.splice(i, 0, x);
        }
    };
    perm(['x', 'y', 'z', 'w'], []);
    var swizzleObjectString = "{" + allSwizzles.join(',\n') + "}";
    return swizzleObjectString;
    //instead of returning you can then write "eval(swizzleObjectString)" and you're set
}