Module for array specific helpers.
map : (Yajson.Json -> a) -> Yajson.Json -> List a
Maps json arrays. Returns an empty list if json value is not an array.
json : Json
json =
Array [ Number 0, Bool False ]
map Yajson.Stringify.compact json == [ "0", "false" ]
filterMap : (Yajson.Json -> Maybe a) -> Yajson.Json -> List a
Given a funcion fn : Json -> Maybe a
maps
a json array, removes Nothing
s and returns a list.
If the json value is not an array returns an empty list.
inc : Json -> Maybe Float
inc json =
case json of
Number n ->
Just (n + 1)
_ ->
Nothing
json : Json
json =
Array [ Number 0, Number 1, Bool True ]
filterMap inc json == [ 1, 2 ]
ofString : List String -> Yajson.Json
Wraps a list of strings in a json value.
ofString [ "hello", "world" ]
== Array [ String "hello", String "world" ]
ofFloat : List Basics.Float -> Yajson.Json
Wraps a list of floats in a json value.
ofFloat [ 3.14, 2.718 ]
== Array [ Number 3.14, Number 2.718 ]
ofInt : List Basics.Int -> Yajson.Json
Wraps a list of ints in a json value.
ofInt [ 3, 4 ]
== Array [ Number 3, Number 4 ]
ofBool : List Basics.Bool -> Yajson.Json
Wraps a list of booleans in a json value.
ofBool [ False, True ]
== Array [ Bool False, Bool True ]