Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl-Sensitive Sunglasses

Re^3: concatenation of lines from two different files

by agianni (Hermit)
on Aug 17, 2007 at 14:40 UTC ( #633314=note: print w/replies, xml ) Need Help??

in reply to Re^2: concatenation of lines from two different files
in thread concatenation of lines from two different files

If that's the case, you'll need to make the hash storing the contents of the first file a hash of arrays (or, rather, a hash of arrayrefs) rather than a simple hash, so you can store each line that matches the id:

my %file1_row_for; while (my $input = <THAT_FILE>){ # only grab column 2 my ( undef, $id ) = split /;/, $input; # add this line to the array of data for this key push @{ $file1_row_for{$id} } = $input; }

Then when you want to output it at the end of the line you can:

print join ';', @{ $file_row_for{$id} } if scalar @{ $file_row_for{$id +} };

Note that you'll just want to check for the length of the arrayref rather than definedness as in my original code.

perl -e 'split//,q{john hurl, pest caretaker}and(map{print @_[$_]}(joi +n(q{},map{sprintf(qq{%010u},$_)}(2**2*307*4993,5*101*641*5261,7*59*79 +*36997,13*17*71*45131,3**2*67*89*167*181))=~/\d{2}/g));'

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://633314]
[1nickt]: In my case I can simply pass sprintf '%.1f', 1.0 (to Types::Standard:: Int), but what if you didn;t know the precision of the number you were working with? Seems I must be missing something. Oh well, my test list is complete, mooving on ...

How do I use this? | Other CB clients
Other Users?
Others taking refuge in the Monastery: (13)
As of 2017-05-24 18:53 GMT
Find Nodes?
    Voting Booth?