What can you use the number of code points in a string for? I can't think of a single use case where that is actually useful. Length of a string in bytes is us

What can you use the number of code points in a string for? I can't think of a single use case where that is actually useful. Length of a string in bytes is useful, though most code shouldn't need to operate at that level of abstraction. Length of a string in glyphs is useful if you are formatting something to a fixed-width display, though that is kind of a niche use-case. Length of a string when rendered is frequently useful, though impossible to calculate from just the string's contents. Length of a string in code points can't be used correctly for anything.