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> My understanding of an iterator function

here an example of a generator creating an iterator and using closure variables.

use strict; use warnings; sub gen_range_step { my ( $start,$stop,$step ) = @_ ; my $current = $start; return sub { my $val = $current; $current += $step; return $val if $val <=$stop; return; } } my $iter = gen_range_step(5,20,4); while ( my ($val) = $iter->() ) { print "$val\n"; }

C:/Strawberry/perl/bin\perl.exe -w d:/tmp/pm/ 5 9 13 17 Compilation finished at Sat Nov 13 21:18:20

> but keep in mind I studied engineering and not computer science

I studied mathematics and some CS, and FP was never mentioned.

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery

In reply to Re^6: What technical benfits perl offers over python + few more questions. (generator/iterator/closure) by LanX
in thread What technical benfits perl offers over python + few more questions. by Anonymous Monk

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