in reply to Re^2: using hashes
in thread iterating hash keys?
Is the $1 var pointing to the value of the hash?
$1 captures the words in the string one at a time. This $hash{ $1 } looks that word up in the hash and returns the associates value (id). The ge causes the ids to be substituted for every word in the line.
Perhaps this will clarify things?
%hash = ( brown=>1, fox=>2, quick=>3, the=>4 );; $line = 'the quick brown fox';; $line =~ s[\b([a-z]+)\b][ $hash{ $1 } ]ge;; print $line;; 4 3 1 2
With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
|
---|
Replies are listed 'Best First'. | |
---|---|
Re^4: using hashes
by R56 (Sexton) on Sep 26, 2013 at 18:21 UTC |
In Section
Seekers of Perl Wisdom