bitvector, a simple bitvector implementation in Rust-lang

This crate is a modification of librustcdatastructures/bitvec.rs for set operator support.

Documentation

Visit the online documentation or run

cargo doc

to generate a local copy.

How to use

Add the following line to [dependencies] in your Cargo.toml file:

toml bitvector = 0.1

Then you can use the BitVector:

```rust extern crate bitvector; use bitvector::*;

fn main() { let mut testvec = BitVector::new(50); for i in vec![0,1,3,5,7,11,13,17,19,23] { testvec.insert(i); }

let mut test_vec2 = BitVector::new(50);
for i in vec![3,5,9,13,19,40,45] { test_vec2.insert(i); }

// union of test_vec and test_vec2
// other possible operators: intersection, difference
let union = test_vec.union(&test_vec2);


assert!(union.contains(3));
assert!(union.contains(5));
assert!(union.contains(13));
assert!(union.contains(19));
assert!(union.contains(9));
assert!(union.contains(40));

// all the operators also have `*_inplace` variants
// which directly modify `self` to avoid extra memory operations.
test_vec.union_inplace(&test_vec2);

assert!(test_vec.contains(3));
assert!(test_vec.contains(5));
assert!(test_vec.contains(13));
assert!(test_vec.contains(19));
assert!(test_vec.contains(0));
assert!(test_vec.contains(9));
assert!(test_vec.contains(40));

} ```

Performance Comparison against std/collections/Set

test bench::bench_bitset_operator ... bench: 222 ns/iter (+/- 22) test bench::bench_bitset_operator_inplace ... bench: 122 ns/iter (+/- 5) test bench::bench_btreeset_operator ... bench: 1,675 ns/iter (+/- 115) test bench::bench_hashset_operator ... bench: 1,748 ns/iter (+/- 37)

LICENSE

MIT