Re^2: 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

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

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Re^3: parentheses around a function call in a ternary choice by FunkyMonk (Bishop) 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	[reply] [d/l] [select]

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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