console.log([0..10].5) // 5

document.querySelector("#myelement").style
..fontSize = "16px"
..color    =  "black"

document.querySelector("#myelement")
..style:
    ..fontSize = "16px"
    ..color    =  "black";
..innerHTML = "Hello World!"

FileReader reader = new FileReader()..onload(loadEvent) {...}

Array::forEach.call([0..9], (_) => console.log(_))
String String::replaceAll(a, b) {
    String res = this
    while res.indexOf(a) != -1 {
        res = res.replace(a, b)
    }
    return res
}

console.log(someObj?.test()); // undefined
var someObj = {
    test: () => "test called"
};
console.log(someObj?.test()) // "test called"