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It has an effect. Whether it's a "side effect" depends on how we've defined that. One way of viewing Haskell is that you are lazily constructing the single co
by dllthomas 2y ago
It has an effect. Whether it's a "side effect" depends on how we've defined that.
One way of viewing Haskell is that you are lazily constructing the single composite "effect on the world" called main.
helloWorld :: IO ()
then is a value representing an effect, but it only actually happens when it becomes a part of main.
Threads complicate this but don't completely destroy the model.