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You can also have pure functions in OOP languages. You can even have a code linter to enforce it as a rule. When discussing programming languages, it's more abo

You can also have pure functions in OOP languages. You can even have a code linter to enforce it as a rule. When discussing programming languages, it's more about what behaviours they encourage rather than what behaviours they support.

rowanG077 7y ago
OOP language aren't explicit in what function is pure. If I'm working on a 10MLoC project and touching hundreds of methods while working I can't lookup the implementation of each one to determine whether they are pure. And no a comment saying they are pure is not sufficient. The above is trivial in FP languages.
- floatboth 7y ago
  Well, except D, D has a @pure annotation :)
  - rowanG077 7y ago
    D pure function aren't really pure though. They can modify the arguments that are passed in. Great concept otherwise.
mrkeen 7y ago
How do I do this?