Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl: the Markov chain saw
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??

A few further points to note:-

  • Use the three-argument form of open with lexical file handles and check for success, giving the o/s error on failure, e.g.

    open my $uniqueFH, '<', $uniqueFile or die "open: < $uniqueFile: $!\n";

  • You can do your chomping in one fell swoop

    chomp( my @data_in = <$uniqueFH> );

    rather than piecemeal.

  • You could consider using a hash slice rather than looping although this might not be practicable with very large data sets

    my %strSpec_protein_hash; @strSpec_protein_hash{ @data_in } = @goodProteins_hash{ @data_in };

  • I wonder if you have a cut'n'paste error in your post, my %strSpec; versus $strSpec_protein_hash{$id} = $seq;

I hope these points are helpful.

Cheers,

JohnGG


In reply to Re: search and extract from a large hash by johngg
in thread search and extract from a large hash by reubs85

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 studying the Monastery: (6)
    As of 2014-07-12 03:50 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      When choosing user names for websites, I prefer to use:








      Results (238 votes), past polls