lib.asserts.assertEachOneOf

Specialized assertMsg for checking if every one of vals is one of the elements of the list xs. Useful for checking lists of supported attributes.

Inputs

name

The name of the variable the user entered val into, for inclusion in the error message

vals

The list of values of what the user provided, to be compared against the values in xs

xs

The list of valid values

Type

assertEachOneOf :: String -> [ComparableVal] -> [ComparableVal] -> Bool

Examples

let sslLibraries = [ "libressl" "bearssl" ];
in assertEachOneOf "sslLibraries" sslLibraries [ "openssl" "bearssl" ]
stderr> error: each element in sslLibraries must be one of [
stderr>   "openssl"
stderr>   "bearssl"
stderr> ], but is: [
stderr>   "libressl"
stderr>   "bearssl"
stderr> ]

Noogle detected

assertEachOneOf =
    name: vals: xs:
    assertMsg (lib.all (val: lib.elem val xs) vals)
      "each element in ${name} must be one of ${lib.generators.toPretty { } xs}, but is: ${
        lib.generators.toPretty { } vals
      }";