#!/usr/bin/ruby

#
## Method calls in functional style
#

func is(a, b) {
    say "#{a.dump} == #{b.dump}";
    a == b || die "\terror: #{a.dump} != #{b.dump}";
}

is(lc("Hello").uc, "HELLO");
is(ucfirst(substr("hello world", 0, 5))+"!", "Hello!");
is(uc("a"), "A");
is(int(12.42), 12);
is(sqrt(25), 5);
is(push([], 1), [1]);
is(len([1,2,3]), 3);
is(len("ab"), 2);
is(match(/^h/, "he").to_bool, true);
is(match("he", /^H/i).to_bool, true);
is(match("he", /^H/).to_bool, false);
is(tc(uc("hello").lc+"!"), "Hello!");
is(sprintf('%s %s', 'a' + 'b', 'c' + 'd'), 'ab cd');