Is this supposed to be Haskell code or Haskell semantics?

For me it looks more like LISP phrased in Perl..

Did you mean: 

sub all_even_from{
  my $even=shift;
  sub {
    $even+=2;
  }
}
 
$iter=all_even_from(4);
 
print $iter->() for (1..5);

[download]
?

> so maybe your general idea of using an operator would lead in the right direction...

I didn't talk about operators but about tie.

Using Tie::Array you could try to tie the iterator to an array @even such that you can subsequently write something like this, _with_ lazy evaluation. 

 
 for (1 ..5) {
   print shift @even;
 }

[download]

again, show me what you like about Haskell - eg list comprehensions (???) - and I will see whats feasible.

Cheers Rolf

In reply to Re^8: Next Language to Learn (Lazy Perl) by LanX
in thread Next Language to Learn by Anonymous Monk

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