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How can IO cause side effects in Functional Programming? [duplicate]
Whenever I read about Haskell, I find that IO can cause side effects.
But I do not understand how it would do it?
Do we mean that we are writing to a file from one lazy sequence and another lazy ...
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8
votes
2
answers
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Alternative to language purity
Purity
One of the interesting concepts in Haskell is the purity. However, I am wondering what the pragmatic reasons behind this is - let me explain a bit more before you reject my question.
My main ...
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30
votes
3
answers
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Different ways to see a monad
While learning Haskell I have faced a lot of tutorials trying to explain what are monads and why monads are important in Haskell. Each of them used analogies so it would be easier to catch the meaning....
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