During my career, I’ve heard many arguments about when to enclose code in its own function. Some of these guidelines were based on length: Functions should be no larger than fit on a screen. Some were based on reuse: Any code used more than once should be put in its own function, but code only used once should be left inline. The argument that makes most sense to me, however, is the separation between intention and implementation. If you have to spend effort looking at a fragment of code and figuring out what it’s doing, then you should extract it into a function and name the function after
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