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Re: Conditional Interpretation?

by gryphon (Abbot)
on Feb 01, 2006 at 03:06 UTC ( [id://526950]=note: print w/replies, xml ) Need Help??


in reply to Conditional Interpretation?

Greetings earcam,

One of the things we did was to use a constant (or a bitwise and set of constants) inside a right-side if conditional for whether we had debug statements work. The compiler optimizes away the entire line at run-time if the constant conditional is false.

do_something() if ($CONSTANT);
do_something_else() if ($CONSTANT & $ANOTHER_CONSTANT);

[download]

Is this what you're looking for?

gryphon
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code('Perl') || die;

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Re^2: Conditional Interpretation?
by ikegami (Patriarch) on Feb 01, 2006 at 03:14 UTC

    Constants don't have leading dollar signs. 

    do_something() if (CONSTANT);
do_something_else() if (CONSTANT & ANOTHER_CONSTANT);

    [download]

    If there's a dollar sign, it's not a constant, and Perl won't optimize it away.

[reply]
[d/l]

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