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checkListOfEnum

lib.checkListOfEnum

Docs pulled from | This Revision | 31 minutes ago


Check if the elements in a list are valid values from a enum, returning the identity function, or throwing an error message otherwise.

Inputs

msg

1. Function argument

valid

2. Function argument

given

3. Function argument

Type

String -> List ComparableVal -> List ComparableVal -> a -> a

Examples

lib.trivial.checkListOfEnum usage example

let colorVariants = ["bright" "dark" "black"]
in checkListOfEnum "color variants" [ "standard" "light" "dark" ] colorVariants;
=>
error: color variants: bright, black unexpected; valid ones: standard, light, dark
(lib.trivial.checkListOfEnum)

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