Hello all,

I am quite new to Moose but making progress. For a real world problem I have now the following Problem. Consider some attributes. The first contains initialization data (from a config-file), the second is build from this data, let's say a pathname. As the configuration never changes, both should be read-only.

First scenario, the configuration is raw data and passed to the constructor. The path-attribute has a lazy builder, which can access the config data. That is easy.

Second scenario, I have config data, two pathnames and want to create a third attribute - parameter string - from these. I could use BUILD to initialize all my attributes, which would become rather complex. This could be made more readable by using attribute builders.

Now my questions:
How do I set read-only variables in BUILD?
Which is called first, BUILD or the attribute_builders?

Thank You for helping

And it came to pass that in time the Great God Om spake unto Brutha, the Chosen One: "Psst!"
(Terry Pratchett, Small Gods)

In reply to Moose and BUILD and 'ro' attributes by Brutha

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.