Oh sorry what I meant is actually:

has 'friends' => { is => 'rw', isa => 'Array', default => () };

Anyway the reason I said the latter syntax makes more sense is because I saw the latter syntax more often. For example In https://metacpan.org/pod/HTML::Template#TMPL_LOOP:

$template->param(
    EMPLOYEE_INFO => [{name => 'Sam', job => 'programmer'}, {name => '
+Steve', job => 'soda jerk'}]
);
print $template->output();

[download]

This code uses reference(array) because of clarity and I think most subroutines uses this syntax.
However this line

has 'friends' => ( is => 'rw', isa => 'Array', default => () );

[download]

is same as:

has 'friends',is => 'rw', isa => 'Array', default => ();

[download]

which is not clear and as for me that looks just weird.
But when using reference, you don't have to use awkward arrow between 'friends' and 'is'

has 'friends',{ is => 'rw', isa => 'Array', default => () };

Of course, not using reference parameter saves some typing but that saves typing of Moose's author, not of us. And using reference is also not a big deal.Clarity is more important

In reply to Re^4: Perl Moose syntax by Anonymous Monk
in thread Perl Moose syntax by Anonymous Monk

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.