To be clear, a function with zero arguments and no side effects is a constant
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My favourite part of the book "Clean Code" so far is the chapter where he advocates that functions ideally have zero arguments and then advocates that functions ideally do not have side effectspic.twitter.com/ylRTNSbWwy
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So, what the author means by "functions" is "methods". With a method, there's always one implicit "argument", `this`, the object on which the method is being called. What he's actually asserting is that the ideal method only interacts with `this`
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Additionally, he doesn't consider it to be a side-effect when a method call interacts with `this` (sets member variables, for example)
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So, for example, instead of one method passing a Boolean flag `isSuite` into an inner method call, he sets `this.isSuite = isSuite` in the first method and then reads from `this.isSuite` in the inner method
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As we see here: https://github.com/ludwiggj/CleanCode/blob/master/src/clean/code/chapter03/SetupTeardownIncluder.java#L28-L33 …
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In author defense the book is called “Clean code”, not “Useful Clean Code”.
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The ideal program has zero lines of code and no bugs
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Probably still has a bug.
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the only winning move is to not play
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To be fair, some of the best functions I’ve been to have had loads of arguments.
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This tweet is amazing and highly underrated
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