tolower

Example: Convert a character to lower case:

public static int main (string[] args) {
	// Output: ``aa1 !``
	print ("%c", 'A'.tolower ());
	print ("%c", 'a'.tolower ());
	print ("%c", '1'.tolower ());
	print ("%c", ' '.tolower ());
	print ("%c", '!'.tolower ());
	print ("%c", '\n'.tolower ());
	return 0;
}

valac --pkg glib-2.0 char.tolower.vala