September 2017
Beginner to intermediate
396 pages
9h 46m
English
Content preview from Haskell Cookbook
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Using Either
Similar to Maybe, another data type that is used often in Haskell is Either. While Maybe decides to map something or nothing, Either goes with two types and keeps either of them. In this recipe, we will construct a safe division using the Either data type and will see how we can represent the error messages in a better way.
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