NOTE: this package is not compatible with Elm 0.19.1

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Set.Verify

Functions to verify properties of a Set.

notEmpty : error -> Validator error (Set a) (Set a)

Fails if a Set is empty.

import Set


notEmpty "error" <| Set.empty
--> Err [ "error" ]


notEmpty "error" <| Set.fromList [ (1, 1) ]
--> Ok <| Set.fromList [ (1, 1) ]

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