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add link to SI-4442

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Li Haoyi
Li Haoyi committed Sep 29, 2016
1 parent 3fb551e commit af699454d11b11d00ca3c4062fd84420374ca12c
Showing with 2 additions and 1 deletion.
  1. +2 −1 post/15 - Benchmarking Scala
@@ -874,7 +874,8 @@ surprisingly nice performance characteristics. Concatenating two `Array`s is
faster than concatenating any other data-structure, even immutable `List`s and
`Vector`s which are supposed to have clever structural sharing to reduce the
need to copy-everything. This holds even for with a million elements, and is
a 10x improvement that's definitely non-trivial.
a 10x improvement that's definitely non-trivial. There's an open issue
[SI-4442]( for someone to fix this.
Indexing into the `Array`, and iterating over it with a `while`-loop, are also
so fast that the time taken is not measurable given these benchmarks. Even

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