Some usability improvements relating to errors #23370
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We now assume that all members of the empty package are meant to be used alone or in projects without separate compilation. So the warning that an inferred type does not conform to a type seen in separate compilation is dropped because it was a hassle for experimentation.
Aligning an expected function type to be dependent gives the false expression that we could have the parameter in a local capture. To avoid that misinterpretation, convert an aligned dependent function as the expected type back to a generic functions before displaying it in the error message.
Linyxus
approved these changes
Jun 15, 2025
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@odersky it was a fun session, wasn’t it? Happy to do that again if we get the chance! |
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@nrinaudo Can you contact me at |
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The changes in this PR were motivated by a very nice live coding session of Nicolas Rinaudo at the Scala User's group meetup in Krakow. We identified 4 areas where the feed-back of the compiler could be clearer:
Int^should give an error.