Does Scala even need the `try` keyword, and must `catch` be a keyword? I'd be happy to call `.catch(partialFunction)` directly on an expression or code block. It could be implemented as an extension method.
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If it's possible to implement as efficiently as normal try/catch, and to opt-out (so that `catch` can be provided as an extension in e.g. MonadError, which would be nice), then sure
Scala 3 could inline it, but Scala 2 would need an additional allocation and stack frame (or two...).
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Or a macro
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But we can't change it in Scala 2 anyway.
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