Christoffer Lernö
@mjtsai compare ObjC - switching between mutable and immutable is completely explicit and inspectable. Including when passing arrays as args
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@mjtsai compare ObjC where there aren't all that many places where you can optimize.
Michael Tsai
@mjtsai perf is slower than swift in the fastest case, but it is consistent, where Swift easily can differ several orders of magnitude.
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@nuoji Seems like you have to hope that the compiler never regresses and also that you can figure out what it's doing in pathological cases. -
@mjtsai "Seems like you have to hope that the compiler never regresses" exactly. You need to put your faith in the optimizer. That is scary. -
@nuoji Incidentally, this also means that a hypothetical second implementation of the language would need to do all the same optimizations… -
@mjtsai Yes that too.
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@nuoji Yes, that is the part that worries me. The compiler will get better, but there will always be things it can’t figure out. - View other replies
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Joe Groff
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