Exts.Tuple

Extensions for tuples.

indexedPair : (a -> b) -> a -> ( b, a )

Turn a items into a key-value pair.

See also Exts.Dict.indexBy and Exts.Dict.groupBy.

first : (a -> a_) -> ( a, b ) -> ( a_, b )

Update the first component of a pair.

second : (b -> b_) -> ( a, b ) -> ( a, b_ )

Update the second component of a pair.

both : (a -> b) -> ( a, a ) -> ( b, b )

Update both components of a pair with a single function.

pair : (a -> a_) -> (b -> b_) -> ( a, b ) -> ( a_, b_ )

Update both components of a pair with two functions.

fork : (a -> b) -> (a -> c) -> a -> ( b, c )

Generate a pair from a single value and a left & right function.

onFirst : (a -> b -> c) -> ( a, b ) -> ( c, b )

Apply a function that considers both elements of a pair and changes the first.

onSecond : (a -> b -> c) -> ( a, b ) -> ( a, c )

Apply a function that considers both elements of a pair and changes the second.

krisajenkins/elm-exts/25.10.0