I normally tend to write Perl modules only when I think they would be useful across different Perl scripts. But here's a question: When we write Perl modules, do we only write them when a pm would be used across different scripts implementing different tasks? OR Can we write Perl modules to group all the sub-functions within one script and put them in the module, so that what we get in the end is a C-programming style separation of sub routines? E.g., in C, you could call the program with the 'main' function as the 'Client' program and create another program that implements the sub-functions that the client can invoke. In this way, the client program simply invoke the services of the program implementing sub-routines. This also ensures that any change to the internal implementation of the sub-routine would require no change to the client program. Can we do the same in Perl using a perl module? Any thoughts would be much appreciated. Thank you!

In reply to Can we have C-style Modularity? by sumeetgrover

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