support for constraints in handler definition#1
Open
dorchard wants to merge 6 commits intoslindley:masterfrom
Open
support for constraints in handler definition#1dorchard wants to merge 6 commits intoslindley:masterfrom
dorchard wants to merge 6 commits intoslindley:masterfrom
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Hi Sam,
I was getting to grips with the library and needed to put a constraint in the handler for the normal Writer monad, but this wasn't supported. So I added it. The Writer.hs example shows its use.
The 'makeHandlerDef' function makes used of this. I didn't need to do anything with 'makeOpDefs' to make my example work, but maybe for other examples there will need to be some handling by 'makeOpDefs'? I couldn't tell.
Cheers,
Dominic