Print the value of $gene_name, preferably between some visible delimiter (like |). Also, "I get errors" is not very helpful when trying to diagnose a problem. Something along the lines of:

I have this code

$sequence=$fastas{ENSG0000017672};,

but when I do this:

my $gene_name = 'frobnitz'; 
$sequence=$fastas{$gene_name};

[download]

I get the following error

'frobnitz' will cause the destruction of the universe.  Stopping.

I expected to see ...

There is a lot more information there for those who wish to help you to go on. If I were to guess (and that is all this is), I would guess that you are reading the value from STDIN and forgetting to chomp, chop, or s/[\012\015]//g the input value.

--MidLifeXis

In reply to Re: hash access with a variable by MidLifeXis
in thread hash access with a variable by LostWeekender

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!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • 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, details, 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, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            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.