Perhaps I misunderstood what you wanted. While you are certainly in trouble if you want to curry the + operator, I see no problem with a function such as sum.
use strict;
use warnings;
use List::Util qw(sum);
sub curry(&@)
{
my ($fn, @args) = @_;
return sub {
$fn->(@args, @_);
}
}
my $f = curry { sum(@_) } 5;
print $f->(3); # prints 8 (5 + 3)
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