It is because if a file is made of a hundred 1-line functions that’s not good code. The separation of concerns is likely not meaningful and it’s detrimental to the reading/understanding of the file.
Why create a function that shortens/clarifies nothing and is used once? If you want to explain some code, use a comment, don’t make spaghetti
Why create a function that shortens/clarifies nothing and is used once? If you want to explain some code, use a comment, don’t make spaghetti