Phoenix.pm: quoting constant hash keys survey

Anthony Nemmer intertwingled at qwest.net
Sat Apr 17 12:48:21 CDT 2004


Oh, those outsourcing programmers in India who are taking all of our 
jobs are gonna LOVE this.  =P

Tony

Scott Walters wrote:

>Originally it was proposed that currying happen automatically in codereference
>context (Perl 6 has numerous contexts, rather than just void, scalar and list)
>and a routine could accept more named parameters than it was given, but it was
>decided that this was too automatic (though very cool), so the current plan is
>that code references have a curry method:
>
>  sub ($foo, $bar) { $foo + $bar }.curry(15).(30); # 45
>
>That's position parameters.
>
>  sub ($foo, $bar) { $foo + $bar }.curry(foo => 15).(bar => 30); # 45
>
>That's using named parameters. Come to think of it, named parameters and currying
>aren't as automatic as currying should be, but this works well with placeholders:
>
>  sub { $^a + $^b }.curry(15).(30); # 45
>
>Of course, this all works on code references, too, which look like &foo
>(rather than \&foo as in P5).
>
>-scott
>
>
>
>On  0, eden li <eden.li at asu.edu> wrote:
>  
>
>>Ooo nice.  I should pay more attention to Perl6's development.  I wonder if they're gonna implement any of the currying features we had discussed at PM before.  (i.e. defining a unary function that can be applied to any number of arguments ala lambda calculus).
>>
>>Anyway, back to the vote, in case it wasn't clear.  My vote is a yea for `.
>>
>>Scott Walters wrote:
>>    
>>
>>>String concat has been renamed ~ from _. . is method call. Primitive
>>>types "autobox" now, so you can ask an array for a length or a hash
>>>for its keys:
>>>
>>>  %hash.keys  # method call
>>>
>>>So, people have adopted the dot for method calls, and JavaScript uses the
>>>dot for both method calls and hash subscripts (as well as array indices),
>>>but since we could be either calling a method or subscripting a primitive,
>>>we have to tell perl which it is or risk confusion when we can't access
>>>hash subscripts with the same name as methods.
>>>      
>>>
>
>
>  
>


-- 

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