Moduletomland-1.3.3.3Haskell2010

Toml.Codec.Combinator.Set

SPDX-License-Identifier : MPL-2.0 Maintainer : Kowainik xrom.xkov@gmail.com Stability : Stable Portability : Portable

TOML-specific combinators for converting between TOML and Haskell Set-like data types.

There are two way to represent list-like structures with the tomland library.

Sets via tables:

foo =
    [ {x = 100}
    , {x = 200}
    , {x = 300}
    ]

OR

[[foo]]
    x = 100
[[foo]]
    x = 200
[[foo]]
    x = 300

You can find both types of the codecs in this module for different set-like structures. See the following table for the better understanding:

Array sets

3 declarations

valuearraySetOf :: Ord a => TomlBiMap a AnyValue -> Key -> TomlCodec (Set a)

Codec for sets. Takes converter for single value and returns a set of values.

Example:

Haskell Set Int can look like this in your TOML file:

foo = [1, 2, 3]

In case of the missing field, the following error will be seen:

tomland decode error:  Key foo is not found

valuearrayIntSet :: Key -> TomlCodec IntSet

Codec for sets of ints. Takes converter for single value and returns a set of ints.

Example:

Haskell IntSet can look like this in your TOML file:

foo = [1, 2, 3]

In case of the missing field, the following error will be seen:

tomland decode error:  Key foo is not found

valuearrayHashSetOf

Codec for hash sets. Takes converter for single hashable value and returns a set of hashable values.

Example:

Haskell HashSet Int can look like this in your TOML file:

foo = [1, 2, 3]

In case of the missing field, the following error will be seen:

tomland decode error:  Key foo is not found

3 declarations

valueset :: Ord a => TomlCodec a -> Key -> TomlCodec (Set a)

Codec for set of values. Represented in TOML as array of tables.

Example:

Haskell Set Int can look like this in your TOML file:

foo =
  [ {a = 1}
  , {a = 2}
  ]

Decodes to an empty Set in case of the missing field in TOML.

valueintSet :: TomlCodec Int -> Key -> TomlCodec IntSet

Codec for IntSet. Represented in TOML as an array of tables.

Example:

Haskell IntSet can look like this in your TOML file:

foo =
  [ {a = 1}
  , {a = 2}
  ]

Decodes to an empty IntSet in case of the missing field in TOML.

valuehashSet :: Hashable a => TomlCodec a -> Key -> TomlCodec (HashSet a)

Codec for HashSet of values. Represented in TOML as an array of tables.

Example:

Haskell HashSet Int can look like this in your TOML file:

foo =
  [ {a = 1}
  , {a = 2}
  ]

Decodes to an empty HashSet in case of the missing field in TOML.