Need some conditional help.
I want a shortcut regarding the search of two or more different variables using the same regex. I know you can do...
if ($var1=~/blah/ && $var2=~/blah/ && $var3=~/blah/) {
print "blah";
}I'd like to simplify this. Is there a way?
Mark Hensler posted this at 05:46 — 3rd December 2000.
He has: 4,048 posts
Joined: Aug 2000
I don't thinks so.
I think you can only look for two strings inside of one, not one string inside of two.
Make sense?
fairhousing posted this at 07:25 — 3rd December 2000.
They have: 1,587 posts
Joined: Mar 1999
depends on how many variable u have. if u have tons u may want to use foreach.
japhy posted this at 19:58 — 5th December 2000.
They have: 161 posts
Joined: Dec 1999
You might think it would be a good idea to do this:
$a = "jeff";
$b = "mary";
$c = "anna";
$all = join "", map "!$_", $a, $b, $c;
# $all is now "!jeff!mary!anna"
# we assume there are no !'s in the $a, $b, $c variables
if ($all =~ /![aeiou]/) {
print "at least one of the names starts with a vowel\n";
}
But this does more work than is needed. You've just gone through each of your variables TWICE BEFORE you get to the regular expression! Compare that to:
for ($a, $b, $c) {if (/^[aeiou]/) {
print "at least one of the names starts with a vowel\n";
last;
}
}
That is far more efficient.
Want to join the discussion? Create an account or log in if you already have one. Joining is fast, free and painless! We’ll even whisk you back here when you’ve finished.