RosettaCodeData/Task/Runtime-evaluation-In-an-environment/Sidef/runtime-evaluation-in-an-environment.sidef

func eval_with_x(code, x, y) {
    var f = eval(code);
    x = y;
    eval(code) - f;
}

say eval_with_x(x: 3, y: 5, code: '2 ** x');   # => 24