Documenting compiler options was already mentioned a few times, but I think we need more emphasis regarding the profiler (-Yprofile-enabled and -Yprofile-trace). This is a wonderful feature that pretty much tells you how time is spent when you compile your project, and “Compile/build speed” has always one of the major complains of Scala developers over the years (still in 2026). The fact that it is only mentioned in a tiny release blog post from January 2025 is a missed opportunity.
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It would be nice if scala docs pages had an embedded repl to test sample code and make sample modifications to run …and if by any chance the sample code would be more close to actual business domain ..it would turn scala doc a true source of learning
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