I think substrings are already "views".

# advent-of-code

[karelpeeters]

I think substrings are already "views".

[orangy]

not in the newest JVMs

[karelpeeters]

Huh. Did it become to complicated to GC the unnecessarily large backing arrays out or something?

[keturn]

that's what I would wonder. if b = a.substring(7, 13) doesn't copy, then a can't be garbage collected while b lives.

[keturn]

which is sometimes what you want but does not sound like a good default.