Side effects are not allowed in functional style programming. Exceptions are sid... | Hacker News

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		breadwinner 7 months ago \| parent \| context \| favorite \| on: Java at 30: Interview with James Gosling Side effects are not allowed in functional style programming. Exceptions are side effects, it doesn't matter whether they are checked or unchecked exceptions. https://jessewarden.com/2021/07/why-functional-programmers-a... While composing methods in stream style is convenient, methods that can throw exceptions warrant more careful coding, so convenience should not always be the priority.

int_19h 7 months ago [–]

Exceptions are not side effects since no state mutation occurs.

If you really want to see everything through the FP lens, exceptions are exactly like Result<T, E> with implicit do-notation.

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