Translate examples/std/hash/hash.rs
Translate examples/std/hash/hash.rs

aakloxu/rust-by-example-cn,jinyuanxie/rust-by-example-cn,rust-lang-cn/rust-by-example-cn,aakloxu/rust-by-example-cn,rust-lang-cn/rust-by-example-cn,jinyuanxie/rust-by-example-cn