why-jay

names.filter(name => name.indexOf('A') !== -1 );

why-jay

function filterNamesWithA(names) { // names is an array
    return names.filter(function (name) { return name.indexOf('A') !== -1; });
}

why-jay

let panel = document.createElement('div');
let button = document.createElement('button');
button.addEventListener('click', function actionPerformed(e) {
    // do stuff here
});
panel.appendChild(button);

why-jay

JPanel panel = new JPanel();
panel.add(new JButton(new AbstractAction("name of button") {
    public void actionPerformed(ActionEvent e) {
        //do stuff here
    }
}));

why-jay

vector<pair<const char *,const char *>> tokenize_string2(const string &text);
auto v = tokenize_string2(get_input_string()); // Disaster strikes!
munge(v);

why-jay

// borrowed from docs.oracle.com/javase/tutorial/essential/exceptions/tryResourceClose.html

static String readFirstLineFromFileWithFinallyBlock(String path) throws IOException {
    BufferedReader br = new BufferedReader(new FileReader(path));
    try {
        return br.readLine();
    } finally {
        if (br != null) br.close();
    }
}

why-jay

    // We need nested scopes here, because the intermediate results can keep
    // large chunks of memory alive and we want to free them as soon as
    // possible to keep the peak memory usage low
    let (outputs, trans, sess) = {
        let (outputs, expanded_crate, id) = {
            let krate = phase_1_parse_input(&sess, cfg, input);
            if stop_after_phase_1(&sess) { return; }
            let outputs = build_output_filenames(input,
                                                 outdir,
                                                 output,

why-jay

struct Point {
    x: f64,
    y: f64,
}

fn foo() {
    {
        let p: Box<Point> = box Point { x: 1.0, y: 2.0 };
    } // p's heap memory is released!
}

why-jay

class Foo : IDisposable {
    // blah
}

// a couple thousand lines later...
using(Foo f = new Foo()) {
    // blah
}

why-jay

fn foo(x: Option<int>) {
    match x {
        Some(val) -> println!("{}", val),
        None -> println!("Sad")
    }
}