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Re^2: parentheses around a function call in a ternary choice

by didess (Sexton)
on Jun 23, 2009 at 21:20 UTC ( [id://774181]=note: print w/replies, xml ) Need Help??


in reply to Re: parentheses around a function call in a ternary choice
in thread parentheses around a function call in a ternary choice

To be very honest, the warnings coming when using "warnings"

do not explain very much to me !

(which constants are we warned about ?)

But your explanations do explain all clearly!

Thanks to all

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Re^3: parentheses around a function call in a ternary choice
by FunkyMonk (Chancellor) on Jun 23, 2009 at 21:40 UTC
    a successful print returns true (see print). So your prints are equivalent to

    1  ?  "3: Flag is up\n"  :  "3: Flag is not up\n";

    [download]

    and that's a constant expression that evaluates to

    "3: Flag is up\n";

    [download]

    That's a constant that isn't used for anything -- a constant in void context.

    When you get errors or warnings you don't understand try adding use diagnostics;. It will try to explain the error or warning given.

    Unless I state otherwise, all my code runs with strict and warnings
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