Cargo Features
[dependencies]
hashbrown = { version = "0.15.2", default-features = false, features = ["nightly", "rustc-internal-api", "rustc-dep-of-std", "raw-entry", "default-hasher", "inline-more", "rayon", "serde", "allocator-api2", "equivalent"] }
- default = allocator-api2, default-hasher, equivalent, inline-more, raw-entry
-
These default features are set whenever
hashbrown
is added without
somewhere in the dependency tree.default-features = false - nightly rustc-dep-of-std?
-
Enables use of nightly features. This is only guaranteed to work on the latest version of nightly Rust.
Enables allocator_api of bumpalo and nightly of optional allocator-api2
Support for allocators that use allocator-api2
- rustc-internal-api rustc-dep-of-std?
-
Enables the RustcEntry API used to provide the standard library's Entry API.
- rustc-dep-of-std = alloc, compiler_builtins, core, nightly, raw-entry, rustc-internal-api
-
Internal feature used when building as part of the standard library.
- raw-entry default rustc-dep-of-std?
-
Enables the deprecated RawEntry API.
- default-hasher default
-
Provides a default hasher. Currently this is foldhash but this is subject to change in the future. Note that the default hasher does *not* provide HashDoS resistance, unlike the one in the standard library.
Enables foldhash
For the default hasher
Affects
hashbrown::DefaultHashBuilder
… - inline-more default
-
Enables usage of
#[inline]
on far more functions than by default in this crate. This may lead to a performance increase but often comes at a compile time cost.
Features from optional dependencies
In crates that don't use the dep:
syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.
- alloc rustc-dep-of-std?
-
Enables rustc-std-workspace-alloc
- rayon implicit feature
-
Enables rayon
For external trait impls
Affects
hashbrown::hash_map.rayon
,hashbrown::hash_set.rayon
,hashbrown::hash_table.rayon
… - serde implicit feature
-
Enables serde
serde:
A generic serialization/deserialization framework
- core rustc-dep-of-std?
-
Enables rustc-std-workspace-core
When built as part of libstd
- compiler_builtins rustc-dep-of-std?
- allocator-api2 default
- equivalent default
-
Enables equivalent
Equivalent trait which can be shared with other hash table implementations.