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A comment on Comparison of C++17, Go, and Java for a next-generation sequencing tool. Parent comment

Re:Comparison of C++17, Go, and Java for a next-generation s... by saagarjha on Thursday April 23, 2020 @06:50PM (#22962481)
std::unordered_map is supposedly slow because it has fairly stringent iterator invalidation requirements. In my experience, unless you wring the most performance out of your code as you can, it's not a huge issue; it's generally faster than most casual implementations.
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Re:Comparison of C++17, Go, and Java for a next-generation s... by TwoBit on Friday April 24, 2020 @01:19AM (#22964902)
Yeah people here are dumping on it for being non-performance-optimal while ignoring that higher performing versions have restrictions and design limitations. unordered_map is fast enough for probably 98% of uses, and the other 2% may be better off finding a specialized version best for their particular case.
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