Iterators: Difference between revisions
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Rakus iterators are one direction only (not reversible), and once the iteration has been reified, it is discarded unless explicitly cached. This allows effortless iteration through multi-gigabyte sized data objects and streams without filling up main memory.
The following example iterates though a hash of Positional Iterable objects and demonstrates object slice operations on each; then has a semi contrived example of where directly using iterators may be actually useful in Raku; collating unique ascending values from several infinite sequence generators.
<lang perl6>my %positional-iterable-types =
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say "\nWhere iterators really shine; when you are trying to collate the values from several infinite generators.";
my @
my @v = @i[0].pull-one, @i[1].pull-one, @i[2].pull-one;
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