Cargo Features

[dependencies]
hi_sparse_bitset = { version = "0.6.1", default-features = false, features = ["impl", "simple_iter", "simd"] }
default = simd

The simd feature is set by default whenever hi_sparse_bitset is added without default-features = false somewhere in the dependency tree.

impl

Makes LevelMasks, LevelMasksIterExt and impl_bitset! visible.
Having them hidden by default prevents your code completion tool from showing you irrelevant implementation methods (even if you did not import them).

simple_iter

You don't need this. Original legacy iterator.

simd default

simd bitblocks support (128,256 bit configs)

Enables wide