compare_strings

A three-way comparator for strings, -1, 0 or 1, comparing bytes in order, so UTF-8 text sorts by code point and upper case comes before lower case. A string that is a prefix of another goes first.

names := string.["pear", "Apple", "fig", "figs"];
quick_sort(names, compare_strings);
assert(names[0] == "Apple" && names[1] == "fig" && names[2] == "figs" && names[3] == "pear");

compare_strings :: (a: string, b: string) -> s64