Bless just tags the variable with a namespace. The effect is that perl looks in that namespace (and its @ISA list of other namespaces) for methods. Applying ref to the variable returns the namespace tag instead of one of the perl types.

Tie magically connects a variable to one of a special family of modules. That family is distinguished by having the special tie methods like TIEARRAY(), FETCH(), and STORE() defined. The tied variable has value semantics rather than reference semantics.

The bless function is more fundamental. You'll find it inside each TIE*() constructor.

After Compline,
Zaxo


In reply to Re: Difference between tie and bless by Zaxo
in thread Difference between tie and bless by GoCool

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.