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This adds a ‘return’ statement as found in other programming
languages. You can use it like this:
with_return (fun {return} ->
some code ...
)
where ‘some code’ may either return implicitly (as usual), or may call
‘return x’ to immediately return ‘x’. All returned values must have
the same type.
The OCaml >= 4.04 implementation is by Petter A. Urkedal and octachron.
See this thread:
https://sympa.inria.fr/sympa/arc/caml-list/2017-11/msg00017.html
The version that works for any OCaml is by me. (Note that my version
cannot be nested).