Easy:
- string_t becomes a keyword.
- Syntactically speaking, string_t!T is the name of a type when T is a
type.
- For every built-in character type T (including const and immutable
versions), the type currently called T[] is now called string_t!T, but
otherwise maintains all of its current behavior.
- For every other type T, string_t!T is an error.
- char[] and wchar[] (including const and immutable versions) are
plain arrays of code units, even when viewed as a range.
It's not my preferred solution, but it's easy to explain, it fixes the
main problem with the current system, and it only costs one keyword.
(I'd rather treat string_t as a library template with compiler support
like and rename it to String, but then it wouldn't be a built-in string.)
Or better, if you want both ranges and random access do same thing,
convert it to byte[] short[] and int[].
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