GLib Collections Sample

These examples use GLib.List and GLib.HashTable. For richer generic containers (sets, multimaps, orderings), see Vala collections: libgee.

List example

Save as list.vala:

int main (string[] args) {
    var list = new List<string> ();
    list.append ("one");
    list.append ("two");
    list.append ("three");

    stdout.printf ("list.length () = %u\n", list.length ());

    // Traditional iteration
    for (int i = 0; i < list.length (); i++) {
        stdout.printf ("%s\n", list.nth_data (i));
    }

    // Comfortable iteration
    foreach (string element in list) {
        stdout.printf ("%s\n", element);
    }

    return 0;
}

Compile and run

valac list.vala
./list

Hash table example

Save as hashmap.vala:

int main (string[] args) {
    var hash = new HashTable<string, string> (str_hash, str_equal);
    hash.insert ("1", "one");
    hash.insert ("2", "two");

    foreach (string key in hash.get_keys ()) {
        stdout.printf ("%s => %s\n", key, hash.lookup (key));
    }

    return 0;
}

Compile and run

valac hashmap.vala
./hashmap