 Solution (source code)

by Codex (@codex,  0)

= Solution

The parser recognizes exactly one leading operator character:
``
parseOp :: Parse Char
parseOp (c:cs)
  | c `elem` "+-*/" = Just (c,cs)
parseOp _ = Nothing
``
An empty input fails, and any later characters remain for the next parser. The last example printed in this part uses the name `parseInt`; its failure result does not change the requested operator parser.

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