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Re: if variants

by Chady (Priest)
on Oct 19, 2004 at 07:53 UTC ( [id://400480]=note: print w/replies, xml ) Need Help??

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in reply to if variants

regarding the precedence, you can also use the and and or variants who have lower precendence so that you can have assignements work.

Here's a rough example with nested ifs and an else

if ($i > 1 ) { if ($a = function_that_may_fail()) { $i++; } else { $i = 1; } }

can become:

$i > 1 and $a = function_that_may_fail() and $i++ or $i = 1;

He who asks will be a fool for five minutes, but he who doesn't ask will remain a fool for life.
Chady | http://chady.net/
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Replies are listed 'Best First'.
Re^2: if variants
by apotheon (Deacon) on Oct 19, 2004 at 07:56 UTC
    Ack! I forgot to mention parentheses! I've got to go add slightly to my "Appendix" section, now.

    - apotheon
    CopyWrite Chad Perrin
Re^2: if variants
by SpanishInquisition (Pilgrim) on Oct 19, 2004 at 12:37 UTC
    Personally I like:

    if ($i>1) { $a = function_that_may_fail(); $i = ($a) ? $i+1 : 1; }

    I find that the only time I really use "and" and "or" are with carp/croak/warn/die. But that's just me.

    At worst:

    do { $a=function_that_may_fail(); $i= $a ? $i+1 : 1; } if ($i>1)

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