How to use catchLeft?

[vivekkpai]

How to use catchLeft?

[benhutchison]

Hi vivek, the best place for "How do I do X with Eff?" is the gitter channel https://gitter.im/atnos-org/eff

I can't usefully comment on your problem without seeing some example code (even an incomplete sketch helps), I dont understand the DSLs well enough from this abstract description.

[vivekkpai]

Thanks Ben. I understand.

I will follow up there. Attached is some sample code.

The DSL here does nothing except raise an exception during interpretation. This is wrapped in a fromEither(Either.catchNonFatal(...)) call. This code is in Except.txt.

The usage of the DSL is in DSLUser.txt. In that the program is in the function program. Here we want to "catch" the left using catchLeft. If all goes well, it will print "Exception caught". However, it does not print anything and the handler never gets called.
DSLUser.txt
Except.txt

[etorreborre]

@vivekkpai I am closing this issue here, please continue the discussion on gitter.