in reply to the 'dot dot dot' operator

How about instead of () you insert die("Deferred implementation can't be executed");.

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Re: Re: the 'dot dot dot' operator
by broquaint (Abbot) on Apr 14, 2003 at 14:21 UTC
    How about instead of () you insert die("Deferred implementation can't be executed");.
    Perhaps, but when I used it I just wanted a placeholder, not necessarily an abstract op (yes, I made that up ;) and I also have no idea how it will be implemented in perl6 (it may be described in p6l ... somewhere). Maybe we need YAO instead 
    package bangbangbang;

use Filter::Simple;

FILTER_ONLY
  code => sub {
    s{ \s \Q!!!\E \s }
     { die("Deferred implementation can't be executed"); }gx
  };

q[ ichi ni san ];

    [download]
    And obligatory example usage 
    use bangbangbang;

sub foo { !!! }
my $bar = sub { !!! };
sub baz { return !!! }

eval { foo()   } or warn "foo() - $@";
eval { &$bar() } or warn "bar() - $@";
eval { baz()   } or warn "baz() - $@";

__output__

foo() - Deferred implementation can't be executed at bbb_test.pl line 
+3.
bar() - Deferred implementation can't be executed at bbb_test.pl line 
+4.
baz() - Deferred implementation can't be executed at bbb_test.pl line 
+5.

    [download]

    HTH

    _________
    broquaint

[reply]
[d/l]
[select]

      It occurs to me that I dislike bang-bang-bang because that conflicts with the common idiom bang-bang to booleanize something. Also, I recall dot-dot-dot being proposed elsewhere as a fatal op which on being executed warns that something wasn't complete and it shouldn't have been executed.

[reply]
        'booleanize' is the word I was looking for yesterday while reading through the Camel. The authors had said something about not wanting to use the word 'boolification'.
[reply]

In Section Cool Uses for Perl