Perl Guru Forums: Perl Programming Help: Beginner: Hash to match a for loop!

CGI/Perl Guide | Learning Center | Forums | Advertise | Login

Site Search: in


	MAIN INDEX	SEARCH POSTS	WHO'S ONLINE	LOG IN

Home: Perl Programming Help: Beginner:
Hash to match a for loop!

IsabelleFr
Novice

May 13, 2013, 10:02 AM

Post #1 of 4 (482 views)

Hash to match a for loop!	Can't Post

Hi, boyz! I have a problem and hope that some1 can help me. Well, i'm trying to use a hash (wich i charged previously) to match table items. It's something like this:

Code

open(IN,"<list.txt") or die "Dommage!\n"; 
while (my $desc = <IN>){ 
	$etat{$desc} =1; 
} 
close IN;

then i charge a table with some info and read it using a for loop like this:

Code

for (my $i = 0; $i <=$#tab; $i++){ 
		if (defined ($etat{$tab[$i]})){ 
		$abc++; 
		$total_abc++; 
		}

I just can't make it match the hash keys with the table items. it's like, if i have in my hash the key "nice" i would like to, when i make the for loop and if it encounters the word "nice", it increments my two variables ($abc and $total_abc). Thanks for helping :)

Laurent_R
Veteran / Moderator

May 13, 2013, 10:41 AM

Post #2 of 4 (479 views)

Re: [IsabelleFr] Hash to match a for loop! [In reply to]	Can't Post

Hi Isabelle,

try to chomp your lines before loading them in either the hash or the table. The problem is likely to come from new line characters.

(This post was edited by Laurent_R on May 13, 2013, 11:00 AM)

BillKSmith
Veteran

May 13, 2013, 6:40 PM

Post #3 of 4 (449 views)

Re: [Laurent_R] Hash to match a for loop! [In reply to]	Can't Post

You can simplify the counting by using grep in scalar context. (You still need Laurent's newline fix)

Code

chomp @tab; 
$total_abc += grep {exists $estat{$_}} @tab;

Good Luck,
Bill

IsabelleFr
Novice

May 13, 2013, 9:46 PM

Post #4 of 4 (442 views)

Re: [Laurent_R] Hash to match a for loop! [In reply to]	Can't Post

Hi! Thanks a lot! It worked :))

Search for (options)

Web Applications & Managed Hosting Powered by Gossamer Threads
Visit our Mailing List Archives