openharmony/third_party_rust_rust-fnv
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Update readme to Rust 1.7 hasher API

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and bump recommended crate version.
This commit is contained in:
ndr 2016-03-03 21:41:52 +00:00
parent 33c91cf5b4
commit cce30450c0
1 changed files with 8 additions and 10 deletions
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18
README.md
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@ -33,7 +33,7 @@ To include this crate in your program, add the following to your `Cargo.toml`:
```toml
[dependencies]
fnv = "1.0.0"
fnv = "1.0.2"
```
@ -44,13 +44,12 @@ must create a default instance of a `FnvHasher` state, then create a new
map using this state with `HashMap::with_hash_state`. A full example:
```rust
#![feature(hashmap_hasher)]
use std::collections::HashMap;
use std::collections::hash_state::DefaultState;
use std::hash::BuildHasherDefault;
use fnv::FnvHasher;
let fnv = DefaultState::<FnvHasher>::default();
let mut map = HashMap::with_hash_state(fnv);
let fnv = BuildHasherDefault::<FnvHasher>::default();
let mut map = HashMap::with_hasher(fnv);
map.insert(1, "one");
map.insert(2, "two");
```
@ -62,17 +61,16 @@ The standard library’s `HashSet` can be configured to use the FNV hasher
with the same mechanism.
```rust
#![feature(hashmap_hasher)]
use std::collections::HashSet;
use std::collections::hash_state::DefaultState;
use std::hash::BuildHasherDefault;
use fnv::FnvHasher;
let fnv = DefaultState::<FnvHasher>::default();
let mut set = HashSet::with_hash_state(fnv);
let fnv = BuildHasherDefault::<FnvHasher>::default();
let mut set = HashSet::with_hasher(fnv);
set.insert(1);
set.insert(2);
```
[chongo]: http://www.isthe.com/chongo/tech/comp/fnv/index.html
[faq]: https://www.rust-lang.org/faq.html#why-are-rusts-hashmaps-slow
[graphs]: http://cglab.ca/~abeinges/blah/hash-rs/
[graphs]: http://cglab.ca/~abeinges/blah/hash-rs/