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A comment on Ask HN: What are the 20% tips that will get my code to performance 80% faster?.
* Don't write your own data structure, stick to the standard library or, in some rare cases, popular and well-known 3-rd party lib.
* Always prefer a Hash or a Set over anything else.
* Beware of any nested loops.
* Have some local / external caches and try memoization.
* Try parallelizing or better, non-blocking wait for all I/O operations.
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* Don't write your own data structure, stick to the standard library or, in some rare cases, popular and well-known 3-rd party lib.
* Always prefer a Hash or a Set over anything else.
* Beware of any nested loops.
* Have some local / external caches and try memoization.
* Try parallelizing or better, non-blocking wait for all I/O operations.