Steven Schubiger (stsc) > Number-Continuation > Number::Continuation



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Number::Continuation - Create number continuations


 use Number::Continuation qw(continuation);

 $set = '1 2 3 6 7 10 11 12 14';
 @set = (1,2,3,6,7,10,11,12,14);

 $contin = continuation($set);
 @contin = continuation($set);

 $contin = continuation(@set);
 @contin = continuation(@set);

 $contin = continuation(\@set);
 @contin = continuation(\@set);

 $contin = continuation($set, { delimiter => '[]', range => '~', separator => ';' });


 scalar context ($contin): '1-3, 6-7, 10-12, 14';
 list   context (@contin): [1,2,3], [6,7], [10,11,12], [14];



 continuation($set | @set | \@set [, { options } ])

Returns in scalar context a stringified representation of a number continuation. In list context a two-dimensional array is returned where each entry represents a list of numbers that belong to a single continuation or which does not belong to a continuation at all.

Continuation ranges may be negative.

It takes optionally a hash reference as last argument containing the parameters delimiter, range and separator. delimiter may contain two characters, where first one is prepended to the beginning of a continuation and the second one appended to the end; range may consist of one or two characters which are being inserted between the beginning and end of a continuation; separator may be set to a single character which ends a continuation.

delimiter, range and separator aren't mandatory parameters. If options aren't defined, a reasonable default will be assumed.


continuation() is exportable.


Steven Schubiger <>


This program is free software; you may redistribute it and/or modify it under the same terms as Perl itself.


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