Nodes for the term “pure function”

Book: Learn Functional Programming The Fast Way! (FP for OOP developers)

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Free functional programming book (free PDF for Scala, Java, Kotlin, etc.)

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An @impure annotation for functional programming in Scala

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Looking at some differences between Scalaz Task and Scala Future

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Scala: “IO monad doesn’t make a function pure; it just makes it obvious it’s impure”

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Always trust pure functions, they cannot lie

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What is Functional Programming? (free video)

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Scala: What do “effect” and “effectful” mean in functional programming?

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One way that functional programming helps with concurrency

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It seems like there is a sound case for a ‘pure’ keyword

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Purity makes the job of understanding code easier ~ Real World Haskell

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