On Thu, 17 Aug 2000, Jonathan Scott Duff wrote:
> BTW, if we define C<with> to map keys of a hash to named place holders
> in a curried expression, this might be a good thing:
>
> with %person {
> print "Howdy, ", ^firstname, " ", ^lastname;
> }
>
> # becomes
> sub {
> print "Howdy, ", $person{$_[0]}, " ", $person{$_[1]};
> }->('firstname', 'lastname');
>
> # becomes
> print "Howdy, ", $person{'firstname'}, " ", $person{'lastname'};
>
> (If that's what people meant, I didn't see anyone actually say it).
Well, so far, I like this best of everything that's been proposed
for how "with" will work. I am still passionately against the keyword
"with", since (IMHO) it conveys no sense of what it does. I think any
of the following keywords would be better:
express, alias, in, within
The following words could also be overloaded for this purpose:
map, use
In any case, if I'm tracking correctly, all of the following
should be legit using the new syntax (forgive me for trying a new keyword):
within %person {
&calc_letter_grade(^name, \^letter_grade);
print "^first_name is ^age\n";
print "^{first_name}'s numerical grade is ^num_grade\n";
^num_grade = 0 unless ^never_missed_class;
if ( ^num_grade > 60 ) { print "^name passed!\n"; }
@temp = (^name, ^age);
};
This would translate to the following:
&calc_letter_grade($person{name}, \$person{letter_grade});
print "$person{first_name} is $person{age}\n";
print "$person{first_name}'s numerical grade is
$person{num_grade}\n";
$person{num_grade} = 0 unless $person{never_missed_class};
if ( $person{num_grade} > 60 ) { print "$person{name}
passed!\n"; }
@temp = ($person{name}, $person{age});
Dave
