Hi monks,

My problem is I have unique keys and am storing an array of values
for each. As each key appears in the file several times, new values just keep on
getting pushed in. At least, that's the idea. The problem is it won't stop
creating keys - my exists checker must be wrong :(

This is what Im trying:

if(exists($matrixhash{$key})){
            
            print "Key exists ! \n";
            <STDIN>;
            
            }else{
            #it doesn't
            print "$key stored as a key here\n";
            # ADD KEY AND VALUE TO HASH
            
            push(@{$matrixhash{$key}},$store);
            
            print "key is $key and value is @{$matrixhash{$key}}\n";
            #<STDIN>;
            }

[download]
So I'm trying to say: if this key exists, don't create it again.
I am going to add something after "Key exists !" line to push more values into the array.

If it doesn't exist, create the key and push the value of $store into the array.

hope that makes some sense,
cheers,
basm101

In reply to checking keys exist in 1 key:multiple value situation by basm101

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.