This crate is a modification of librustc_data_structures/bitvec.rs for set operator support.
Visit the online documentation or run
cargo doc
to generate a local copy.
Add the following line to [dependencies]
in your Cargo.toml
file:
bitvector = 0.1
Then you can use the BitVector
:
extern crate bitvector;
use bitvector::*;
fn main() {
let mut test_vec = BitVector::new(50);
for i in vec![0,1,3,5,7,11,13,17,19,23] { test_vec.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));
}
test bench::bench_bitset_operator ... bench: 610 ns/iter (+/- 114)
test bench::bench_bitset_operator_inplace ... bench: 377 ns/iter (+/- 21)
test bench::bench_btreeset_operator ... bench: 2,782 ns/iter (+/- 169)
test bench::bench_hashset_operator ... bench: 3,490 ns/iter (+/- 395)
MIT