Re^2: Need and algorithm to converse characters to unique and permanent Serials

The OP asked for unique serials, and those algorithms can not guaranteed that, they just make repetitions unlikely (...I know, the requirements are quite vague).

If uniquesness is a hard requirement, I think that there are only two possible solutions:

Track used serials in a file or database (using DB_File or SQLite, for instance).
Make the serials transforming the originals in a way so that no information is lost (an injective transformation). For instance, if the data has some structure, use that knowledge to compress it, and then convert it to a human-friendly format.

Comment on Re^2: Need and algorithm to converse characters to unique and permanent Serials

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Re^3: Need and algorithm to converse characters to unique and permanent Serials by Limbic~Region (Chancellor) on Jan 29, 2009 at 18:07 UTC
salva, Using the DB approach would allow the use of Data::UUID. If input string exists, return key If not, generate new one, store it, return it Cheers - L~R	[reply]