What is the proper way to use bit array in Rust?
bitarray, rust
Solution
There does not exist a dedicated bit-vector in the standard library and `Vec<bool>` is not specialized like C++'s `vector<bool>`. Rust advocates the use of external crates instead of building a huge standard library. The de-facto crate for this use case is `bit-vec`.
You appear to have found a link to an old standard library documentation: `https://doc.rust-lang.org/1.2.0/std/collections/struct.BitVec.html`. Note the `1.2.0` in the url! The current version of Rust is 1.25 (as of April 2018), which means that `1.2` is already more than two years old. Apart from that, `BitVec` is marked as unstable in the 1.2 docs; it was removed later.
Problem
I need a class with functionality equal to `vector<bool>` in C++. The Rust documentation tells about `BitVec`, but `use std::collections::BitVec` causes Unresolved import error during compiling. According to a pull request, `BitVec` has been removed. Is there any adequate replacement for it?