Simple benchmarks of Rust (standard library) features.
- option_cardinality: various ways to convert a boolean to an integer listed under a stackoverflow question, in particular for converting
Option::is_someinto the number of elements in an Option container. - option_unwrap: various ways to unwrap an option when you are sure it cannot be empty.
- btreeset_binary_contains vs btreeset_binary_contains_if_not_empty: when sets are quite likely to be empty,
!set.is_empty() && set.contains(elementt)used to be faster thanset.contains(element)on its own. - btreeset_general_contains vs btreeset_general_contains_if_not_empty: found the equilibrium where this trick evens out.
- btreeset_iter vs btreeset_range: creating an iterator takes longer than creating a range, that is kind of a pair of iterators. Which is solved in issue #62924, except that the numbers say it isn't!? To be continued...
rustup install nightly
rustup run nightly cargo bench