[Pdx-pm] Apache, mod_perl, Catalyst, qx, and the ampersand

[Eric Wilhelm]

# from Wil Cooley
# on Thursday 21 December 2006 11:29:

>The only problem that
>makes the syntactic sugar less sweet is that the block-as-anon-sub is
>limited to the first parameter, so it doesn't mix as well with OO
>because you have to use  a proper anonymous-sub.

Well, prototypes don't work for method calls anyway.  In the list.pm, 
where I was working on map and friends in OO (to allow chaining ala 
ruby), I too wanted something a bit handier that 'sub ' for passing 
subrefs to methods.  I realized that we could just use lambda.

  use utf8;
  sub λ (&) {return($_[0])}

  sub foo {
    my $self = shift;
    my $sub = shift;
    print "sub is $sub";
  }

  main->foo(λ{"whee"});

--Eric
-- 
There was something witty here, but it got lost in the mail.