UglifyJS/demo.cola

// `main` functions may binding to a onload event 
// Functions can defined without `function` keyword, with and without `type`
@require './sugar.min.js' 

main(){
    // Unary operators
    // Two variants of `isset` operator. Which is better?
    bool _seted = true, _empty;
    console.log("`_seted` is", _seted?? ? "seted" : "empty");
    console.log("`_empty` is", isset _empty ? "seted" : "empty");

    // `clone` operator 
    Array _first = [584], _second = clone _first;
    _first.push(404);
    console.log("`_first`:",_first,"`_second`:",_second);

    // Binary operators
    // `pow` operator
    console.log("5 ** 3 =", 5 ** 3);

    // `modulo` operator
    console.log("10 %% 4 = ", 10 %% 4);

    // `isset` conditional assignment
    int a, b = 4;
    console.log("`a` is", a, ", now `a` is", a ?= b); 
    console.log("`a` is", a, ", now `a` still", a ?= 584);

    // `isset` binary conditional
    int x, y = 5;
    console.log("`x` is", x, ", `y` is", y, ", x ? y = ", x ? y), x = 1;
    console.log("`x` is", x, ", `y` is", y, ", x ? y = ", x ? y);

    // `is` operator
    console.log("'hello'", "hello" is String ? "is" : "isnt", "`String`");

    // `isnt` operator
    console.log("'goodby'", "goodby" isnt Number ? "isnt" : "is", "`Number`");

    // Boolean alternatives
    console.log("`yes` and `no`", yes is Boolean && no is Boolean ? "is" : "isnt", "`Boolean`");
    console.log("`on` and `off`", on is Boolean && off is Boolean ? "is" : "isnt", "`Boolean`");

    // Strings
    // New quotes symbol, multi-lining and templating
    console.log(`

        Hello!
        My name is ColaScript, and i know who you are }:->
        User agent: @{navigator.userAgent}
        Vendor: {{navigator.vendor}}

    `);

    // Raw strings
    console.log(r"\n \r \t some@email.ru");

    // Multiline RegExp's
    RegExp isEmail = /
        ([\w-\.]+)
        @
        ((?:[\w]+\.)+)
        ([a-zA-Z]{2,4})
    /; 
    String email = r'some@email.ru';
    console.log("@email {{ isEmail.test(email) ? "is" : "isnt" }} valid email adress");

    // Arrays
    // Empty getter and setter ( pushing )
    Array arr = [2, 4, 8, 16, 32];
    console.log("Last element of `arr` is", arr[]), arr[] = 64;
    console.log("Now last element of `arr` is", arr[]);

    // Splice assignment
    arr[2..4] = [3, 2, 1];
    console.log("`arr` is", arr);

    // Range
    console.log("`[0..10]` is", [0..10]);

    // Calling function 
    Object pro;
    console.log(pro = Profile(
        "Dan", "Green", "Russia",
        "HTML5", "JavaScript", "Dart", "PHP", "CSS3", "LESS", "Qt",
        age : 19,
        petName : "Felix"
    ));

    // Cascade operator
    pro
        ..firstName += "iil"
        ..secondName = "Onoshko"
        ..skills:
            ..[1] = "JS";
        ;

    console.log(pro);
}

// Functions
// Named, positional and splated arguments, with default values.
// Arrow functions.
Object Profile(String firstName, String secondName, String country = "Russia", Array skills..., age:, petName: "Tux"){
    skills.forEach((val) => val == "JavaScript" && console.log("JavaScript - It Awesome!"));
    return {
        firstName, secondName, age, country, skills, petName
    };
}

//main();