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Comment by jfecher

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Comment by jfecher

Right, compared to explicitly passing the parameter, with effects:

- You wouldn't have to edit the body of the function to thread through the parameter. - The `can Use Strings` part can be inferred (and in Ante's case, it is my goal to have the compiler write in inferred types for you so that top-level definitions can be inferred if desired but still annotated when committed for code review). - Most notably, the `can Use Strings` can be included in a type alias. You could have an alias `MyEffects = can Use Strings, Throw FooError`, etc for the effects commonly used in your program. If your state type is used pervasively throughout, this could be a good option. When you have such an alias it also means you'd just be editing the alias rather than every function individually.

Generally though, while I think the passing around of state through effects can be useful it isn't the most convincing use of effects. I mention it more for "here's another benefit they can have" rather than "here's this amazing reason you should definitely use them for"

Replies jfecher · 2025-05-25
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