writing a class or a function

[Skaperen]

a function retaining data looks clear to me. if there are 2 function that need to share or exchange data, they can be made in the same module and that would do it. OTOH, when i try to think of a use case for data sharing/exchanging, i end up with an idea that would be done better in a class, such as a queued buffer. potential users might need more than one. while that can still be done with just some functions exchanging retained data in a module, layered with a container like a dictionary, a class makes it simpler because the design expression is just for one instance of the many instead of having all that indexing in the code (BTDT in C and assembler).