// retoor <retoor@molodetz.nl>

import "scheduler" for Scheduler, Future

var transform = async { |list, fn|
    var result = []
    for (item in list) {
        result.add(fn.call(item))
    }
    return result
}

var doubled = await transform([1, 2, 3]) { |x| x * 2 }
System.print(doubled) // expect: [2, 4, 6]

var squared = await transform([2, 3, 4]) { |x| x * x }
System.print(squared) // expect: [4, 9, 16]