I need help in perl Tk to save, load, default or change config variables, whenever i require. How do I approach.

One good way is to use Storable. It allows you to write an existing hash to a file, OR read the file back into a hash.

I would use Storable only for short-time data storage (i.e. temporary files that survive only for seconds up to hours) on a single machine. Here is why: Re: Perl Storable problem (i Think).

There are much better ways for long-time data storage and configuration files: Re: Accessing variables in an external hash without eval.

And for storing more than a few kBytes worth of data, perhaps across several machines, there is DBI and the various supported databases: Re^2: Perl and Database.

Alexander

--
Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)

In reply to Re^2: Tk save variables into a file and load by afoken
in thread Tk save variables into a file and load by gpremala

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.