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Can anyone explain this OCaml toplevel behaviour?
# 1________________________________1;;
- : int = 11
(The big line is a sequence of underscores: ‘_’)
Out of curiosity, this program compiles under ocamlc, too.
Underscores are allowed in numbers (and ignored) in OCaml. From http://www.cs.ru.nl/~tews/htmlman-3.10/lex.html#xhtoc5: