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warning for type piracy during interactive use? #30805

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stevengj opened this issue Jan 22, 2019 · 0 comments
Open

warning for type piracy during interactive use? #30805

stevengj opened this issue Jan 22, 2019 · 0 comments
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stdlib:REPL Julia's REPL (Read Eval Print Loop)

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@stevengj
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stevengj commented Jan 22, 2019 •
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I wonder if we should issue a warning, at least for code evaluated in the Main module, perhaps only when isinteractive() (i.e. in the REPL and similar), when type piracy occurs.

This is a practice that we usually don't recommend and is an easy way for newcomers to shoot themselves in the foot with baffling error messages. See e.g. #29321, #27926, #26528, #22363, etcetera.
@stevengj stevengj added the stdlib:REPL Julia's REPL (Read Eval Print Loop) label Jan 22, 2019
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