Data.Generics.Builders

syb-0.4.2: Scrap Your Boilerplate

Copyright | (c) 2008 Universiteit Utrecht
License | BSD-style
Maintainer | generics@haskell.org
Stability | experimental
Portability | non-portable
Safe Haskell | Safe-Inferred
Language | Haskell98

Data.Generics.Builders

Description

This module provides generic builder functions. These functions construct values of a given type.

Synopsis

- empty :: forall a. Data a => a
- constrs :: forall a. Data a => [a]

# Documentation

empty :: forall a. Data a => a

Construct the empty value for a datatype. For algebraic datatypes, the leftmost constructor is chosen.

constrs :: forall a. Data a => [a]

Return a list of values of a datatype. Each value is one of the possible constructors of the datatype, populated with `empty` values.