Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl-Sensitive Sunglasses
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??
prototypes on methods, so that I can do
$obj->do { stuff(@_) }

hey, a man can dream :-)

update: ysth wanted to know what the prototype for my example was. I'll explain.

First, I'll note I posted this originally because the OP made me think of Re: Automatic Loop Counter not in perl. But that may not be clear enough.

So, anyway, one of the things I do quite a lot is pass around code blocks (or anonymous subroutines subroutine references - in perl it's all the same - as, as far as I'm concerned, it should be)

That means I do a lot of stuff like

$object->method(sub { my ($arg) = @_; # stuff });
Which just looks ugly. Especially when compared to
@result = map { insert(@your_code_here) } @input;
or even
sub one_hundred_and_one_times(&) { my $block = shift; $block->() for (0 .. 100); } @result = one_hundred_and_one_times { more($stuff) };
Sadly, that doesn't work for methods, since method calls ignore prototypes.

In other words, I'd just like

$object->method { # code block };
to pass "sub { # code block }" to "$object->method()" if "method" is declared with a "&" prototype.

updated fixed syntax in example.


In reply to Re: what would you like to see in perl5.12? by Joost
in thread what would you like to see in perl5.12? by ysth

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!
  • 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, 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, 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.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others chilling in the Monastery: (12)
    As of 2015-07-07 16:39 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









      Results (91 votes), past polls