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A comment on Pessimism about parallelism. Parent comment

Re:Pessimism about parallelism by samatman on Wednesday December 26, 2018 @10:43PM (#18767107)
Is this actually true? Clojure is eager and has efficient immutable data structures.
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Re:Pessimism about parallelism by vmchale on Thursday December 27, 2018 @02:43AM (#18768102)
Some immutable data structures must be implemented strictly, others lazily.

There are known algorithms/data structures where you either have to use immutability or laziness in order to get an efficient implementation.

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