derive-2.6.4: A program and library to derive instances for data types

Safe HaskellNone
LanguageHaskell2010

Data.Derive.Has

Description

Has is a pseudo derivation. For each field of any constructor of the data type, Has generates hasFieldName which returns True if given the the given field is a member of the constructor of the passed object, and False otherwise.

Documentation

makeHas :: Derivation Source #