Beefy Boxes and Bandwidth Generously Provided by pair Networks
Pathologically Eclectic Rubbish Lister
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??
I am still a newbie, but / therefore - what is wrong with using hash here (with keys as line numbers and values as bases)?
#!/usr/bin/perl -l use strict; use warnings; print "If an array element is a line number and a base together as a s +tring:"; my %positions; for my $line (split /\n/, <<'END') 1 ACAC 2 AGAC 3 AGTC 4 ACCA END { next if $line =~ /[GT]/; my ($number, $bases ) = split / /, $line; $positions{$number} = $bases; } for my $number ( sort keys %positions ) { print "$number => $positions{$number}"; print "Just print a number $number"; } print "If there is an array element for a line number and for a base:" +; my @array = ( qw (1 ACAC 2 AGAC 3 AGTC 4 ACCA) ); %positions = (); for (my $i = 0; $i < @array; $i +=2 ) { my ($number, $bases ) = @array[$i, $i+1]; next if $bases =~ /[GT]/; $positions{$number} = $bases; } for my $number (sort keys %positions) { print "$number => $positions{$number}"; print "Just print a number $number"; }
It prints:
If an array element is a line number and a base together as a string: 1 => ACAC Just print a number 1 4 => ACCA Just print a number 4 If there is an array element for a line number and for a base: 1 => ACAC Just print a number 1 4 => ACCA Just print a number 4

In reply to Re: filtering an array by vagabonding electron
in thread filtering an array by prbndr

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • 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, 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, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • Outside of code tags, you may need to use entities for some characters:
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others making s'mores by the fire in the courtyard of the Monastery: (7)
    As of 2014-07-26 08:07 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      My favorite superfluous repetitious redundant duplicative phrase is:









      Results (175 votes), past polls