rust-intmap

Specialized hashmap for u64 keys

Might be missing some functionality but you can remove, add, get and clear for now.

Performace compared to the standard hashmap:

test tests::u64_get_built_in    ... bench:      43,925 ns/iter (+/- 2,712)
test tests::u64_get_intmap      ... bench:       1,099 ns/iter (+/- 136)
test tests::u64_insert_built_in ... bench:      64,717 ns/iter (+/- 2,830)
test tests::u64_insert_intmap   ... bench:      28,419 ns/iter (+/- 983)