Cargo Features

[dependencies]
once_map = { version = "0.4.17", default-features = false, features = ["std", "ahash", "rayon", "equivalent"] }
default = ahash, std

These default features are set whenever once_map is added without default-features = false somewhere in the dependency tree.

std default rayon?

Enables parking_lot, std of stable_deref_trait, runtime-rng and std of optional ahash

Affects once_map::sync

ahash default

Enables ahash, ahash of hashbrown

rayon = std

Enables rayon, rayon of hashbrown

Features from optional dependencies

equivalent implicit feature

Enables equivalent

equivalent:

Traits for key comparison in maps