First class environments: Difference between revisions
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→{{header|Perl 6}}: two changes to make it run again
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=={{header|Perl 6}}==
{{Works with|rakudo|2015-12-17}}
Fairly straightforward. Set up an array of hashes containing the current values and iteration counts then pass each hash in turn with a code reference to a routine to calculate the next iteration.
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};
sub next (%this
return %this if %this.<value> == 1;
%this.<value>.=&get_next;
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};
my @hailstones = map {
while not all( map { $_.<value> }, @hailstones ) == 1 {
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