InsertableKey
Generates a new key between two keys.
import InsertableKey exposing (Key, after, before, between, init)
generateThreeKeys : Maybe ( Key, Key, Key )
generateThreeKeys =
let
left =
init
in
after left
|> Maybe.andThen
(\right ->
between left right
|> Maybe.map
(\center ->
( left, center, right )
)
)
String
The key.
This type is an alias of String
so you can use this as Dict keys.
It is highly recommended to always generate key using this module.
init : Key
The initial key.
before : Key -> Maybe Key
Generates a key before given key.
after : Key -> Maybe Key
Generates a key after given key.
between : Key -> Key -> Maybe Key
Generates a key between given keys.
isValid : Key -> Basics.Bool
Check if a key is valid or not. Basically you don't need this function if you always generate keys using this modele.