[Melbourne-pm] Nested maps returning hash references

[Toby Corkindale]

On 05/10/11 16:51, Andrew Pam wrote:
> On 05/10/11 16:46, Andrew Pam wrote:
>>>     map {
>>>         my $f = $_;
>>>         {
>>>             map {
>>>                 $f->can($_) ? ($_ =>  $f->$_) : ()
>>>             } qw(label name html);
>>>         }
>>>     } @fields;
>>>
>>>
>>> Any thoughts?
>>
>> Actually looking more closely, the braces around the inner map in the
>> final example look like they're being interpreted as a block, not as an
>> anonymous hash constructor.
>
> Note:  Putting a unary "+" in front of the open bracket should turn it
> into an unambiguous hash constructor.

That was one of the first things I tried after reading the map 
function's documentation - it doesn't work - not valid syntax.