Scala annoyance #27: … match { case x if someExpensiveCalc(x) => someExpensiveCalc(x) + foo } Expensive redundancy. :-(
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@djspiewak we need a lazy-val optimization for local blocks perhaps...
@jsuereth @djspiewak No. This would be broken. It is *not* an optimisation. You can do explicit sharing (val) only.
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@djspiewak@jsuereth It is not an optimisation, it is a space/time trade that is not always optimal. See#haskell for this issue. - Show replies
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