module FirstClassFunctions {
    @Inject Console console;
    void run() {
        function Int(String) stringLen = s -> s.size;
        function Int(Int, Int) sum = (n1, n2) -> n1+n2;
        String[] testData = ["abc", "easy", "as", "123"];
        console.print($|total string length of values in {testData} =\
                       | {testData.map(stringLen).reduce(0, sum)}
                     );
    }
}