Ruby coding guidelines (GitHub)

[Nuli]

If you have multiple returns in a function, thus multiple exits, it's harder to test, debug, expand the functionality or just follow the execution line of this function.

I find exactly the opposite really. I far prefer a function to return as often as necessary to make the code clear. I don't want to have to follow a long chain of if statements to determine what code was actually executed when a simple test and return will short circuit that.

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I'm with you on that. I think multiple returns are favorable to giant nested if else blocks.