Type Definition proptest_arbitrary::StrategyFor [] [src]

type StrategyFor<A> = StrategyType<'static, A>;

StrategyFor allows you to mention the type of Strategy for the input type A without directly using associated types or without resorting to existential types. This way, if implementation of Arbitrary changes, your tests should not break. This can be especially beneficial when the type of Strategy that you are dealing with is very long in name (the case with generics). Additionally, if you have a custom Strategy type, or use a Strategy type with generics in it where you've provided a custom type for the type parameter, you need not export your type if A is Arbitrary as the Strategy type is still reachable from StrategyFor.

This is the same as StrategyType<'static, A>.