derive-0.1: A program and library to derive instances for data types Contents Index

Data.Derive.Set

Description

A pseudo derivation. For each field in the data type, deriving Set generates setFieldName v x = x{fieldName = v}. This derivation is intended to work around the fact that in Haskell assigning to a field is not a first class object (although extracting from a field is).

Documentation

makeSet :: Derivation

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