evalEmpty & execEmpty handlers #371
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robrix
commented
Mar 15, 2020
| @@ -8,6 +8,8 @@ | |||
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| - Defines `Algebra` instances for `Control.Monad.Trans.Maybe.MaybeT`, `Control.Monad.Trans.RWS.CPS`, and `Control.Monad.Trans.Writer.CPS`. ([#366](https://github.com/fused-effects/fused-effects/pull/366)) | |||
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| - Adds `evalEmpty` and `execEmpty` handlers for the `Empty` carriers as conveniences for using `empty` to signal early returns. ([#371](https://github.com/fused-effects/fused-effects/pull/371)) | |||
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This PR adds
evalEmpty&execEmptyhandlers for theEmptycarriers, respectively discarding the result & returning aBoolindicating whether control exited normally.