say you wanted to do
$condition ? $a=2 : $b=3
would
($condition) ? ($a=2) : ($b=3)
then be the correct/advisible way to do it?
It would be one way to do it with a ternary operator. Another way is shown below. Both are correct (i.e., compile without error). Which is 'advisable' depends on circumstances; I tend to prefer the ternary form below, but
if ($cond) { $a = 2 } else { $b = 3 }
seems the clearest and most advisable of all.
>perl -wMstrict -le
"my $cond = shift;
$a = $b = 99;
($cond ? $a : $b) = ($cond ? 2 : 3);
print qq{a $a b $b};
"
0
a 99 b 3
>perl -wMstrict -le
"my $cond = shift;
$a = $b = 99;
($cond ? $a : $b) = ($cond ? 2 : 3);
print qq{a $a b $b};
"
1
a 2 b 99
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
| |
For: |
|
Use: |
| & | | & |
| < | | < |
| > | | > |
| [ | | [ |
| ] | | ] |
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.