Better than I'd have answered. Just an addition, to be complete.

The return value of the sub is the last eval:ed statement, in this case the 'bless'. It returns the reference (new object).

It is a common idiom to place the bless last in 'new' methods, so the new object is returned.

(The one asking the question probably knows this, since it says so in the Camel book about 'bless'. But just to be safe.. the other part of the question is almost there in the Camel book, too.)

Update:
Surprising, but if merlyn says it is a pedagogical problem, I'll believe it. :-) (That would be Perl-only programmers? The "return last value by default" is quite Perl-specific, afaik?)

In reply to Re^2: What means: "bless { @_ } => $class;"? by BerntB
in thread What means: "bless { @_ } => $class;"? by hesco

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.