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Not having a version number is a bad idea. It will lead to all kinds of misunderstandings. How can anyone tell you what "version" they have installed if there is no version number?

If you ask me, I'd have no less than 3 modules: one with API1, one with API2 and one with all common code to API1 and API2.

Another solution is, depending on your code, to have the API modules contain only your public interface. Then all "working" code is in the third module. That will make it easier to maintain the whole by separating the concerns "interface" and "working code".

Or the API1 module could contain some routines that "translate" API1 calls into their API2 version and then handover execution to API2 which calls upon its own routines. You could do without a third module in this case.

CountZero

A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James

My blog: Imperial Deltronics

In reply to Re: How do you do multi-version modules? by CountZero
in thread How do you do multi-version modules? by perl-diddler

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