Here is one way:

#! perl
use strict;
use warnings;
use Data::Dump;

my %HoA_sequence =
(
    67 => 'A',
    68 => 'S',
    77 => 'W',
    78 => 'P',
    79 => 'I',
);

$HoA_sequence{$_} //= '-' for 67 .. 79;

dd \%HoA_sequence;

[download]

Output:

21:40 >perl 904_SoPW.pl
{
  67 => "A",
  68 => "S",
  69 => "-",
  70 => "-",
  71 => "-",
  72 => "-",
  73 => "-",
  74 => "-",
  75 => "-",
  76 => "-",
  77 => "W",
  78 => "P",
  79 => "I",
}

21:42 >

[download]

Note: the line $HoA_sequence{$_} //= '-' for 67 .. 79; could be written more verbosely as:

for my $protein (67 .. 79)
{
    unless (exists $HoA_sequence{$protein})
    {
        $HoA_sequence{$protein} = '-';
    }
}

[download]

which may be clearer if you’re not comfortable with Perl’s defined-or operator and statement modifiers.

Hope that helps,

Athanasius <°(((>< contra mundum Iustus alius egestas vitae, eros Piratica,

In reply to Re: How to add missing part in a Hash of Array by Athanasius
in thread How to add missing part in a Hash of Array by Anonymous Monk

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.