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utility functions to deal with Library-of-Congress call numbers

Library::CallNumber::LC is mostly designed to do call number normalization, with the following goals:

  • The normalized call numbers are comparable with each other, for

proper sorting * The normalized call number is a short as possible, so left-anchored wildcard searches are possible (e.g., searching on "A11*" should give you all the A11 call numbers) * A range defined by start_of_range and end_of_range should be correct, assuming that the string given for the end of the range is, in fact, a left prefix

That last point needs some explanation. The idea is that if someone gives a range of, say, A-AZ, what they really mean is A - AZ9999.99. The end_of_range method pads the given call number out to three cutters if need be. There is no attempt to make end_of_range normalization correspond to anything in real life.



Verified by

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Verified by

Debian: gregor herrmann <>

Verified on

26 May 2012


License: artistic or gpl-1+ or bsd-2-clause

Leaders and contributors

Daniel Wells contact

Resources and communication

AudienceResource typeURI
Debian (Ref) (R)
Perl (Ref)

Software prerequisites

This entry (in part or in whole) was last reviewed on 11 April 2018.


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Date 2015-07-17
Source Debian
Source link


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