>>>>> "sw" == shawn wilson <ag4ve...@gmail.com> writes:
please learn how to quote emails properly. it is hard to tell here what
i replied and what you wrote.
sw> On Fri, Mar 18, 2011 at 4:50 PM, Uri Guttman <u...@stemsystems.com> wrote:
>> >>>>> "sw" == shawn wilson <ag4ve...@gmail.com> writes:
>>
sw> i ran across a peace of interesting code:
sw> my $writer = shift->(
sw> [ 200, [ "Content-type" => "text/plain" ], $s ]
sw> );
>>
>> first off, there is no OO anywhere in that code. all it is is a
>> dereference of a code reference passed in to a sub.
>>
>>
sw> [snip]
sw> there is NO method there so it isn't a method call. if you have a code
>> reference (to a regular sub) in $code then you dereference it like this:
>>
>> $code->( args ... ) ;
>>
>> all the code does is skip assigning the code ref from @_ into $code. i
>> generally avoid that style of directly using the shift in an
>> expression. it is better style to store it in a variable so you have
>> some extra names to describe what that value is.
>>
>>
>> so, what your saying is:
sw> my $writer = sub {
sw> my $a = shift;
sw> return [ 200, [ "Content-type" => "text/plain" ], $s ];
sw> }
no. where is the use of $a? where is the code call that dereferences the
ref?
uri
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