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A comment on Can you use a class in C?. Parent comment

Re:Can you use a class in C? by leeman2016 on Sunday August 13, 2023 @09:04AM (#37109627)
How would you do DI abstractions using just functions? (Honest question)

I am so much used to the idea of swapping out functionality (set of functions and a state). For example, just recently I had to swap out an Excel spreadsheet reader/writer library in Go for performance reasons, and would have bled a lot (due to refactoring) had it not been encapsulated as an interface.

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Re:Can you use a class in C? by shortrounddev2 on Sunday August 13, 2023 @09:05AM (#37109651)
Function pointers in a struct
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Re:Can you use a class in C? by winstonewert on Sunday August 13, 2023 @11:47AM (#37111019)
How would either approach be different? In both cases you would have to rewrite the code that directly interacts with your Excel library.
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