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A comment on Beating C with 70 lines of Go. Parent comment

Re:Beating C with 70 lines of Go by ajeetdsouza on Wednesday November 20, 2019 @03:09PM (#21587936)
This is not true, see my comment here: https://news.ycombinator.com/edit?id=21587907
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Re:Beating C with 70 lines of Go by danieldk on Thursday November 21, 2019 @02:31AM (#21592109)
Take the Darwin version linked from your site. Run perf record wc thefile.txt. Then run perf report and you will see iswspace in the call graph.

As I show in [1], removing this call and replacing it by a character match, gives a speedup of almost 2x.

[1] https://news.ycombinator.com/item?id=21592089

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