A Key Set supports the flexiable key function.
Add it to dependecy
Cargo.toml
key-hash-set = { git = "https://github.com/minghu6/rust-key-set", branch = "master" }
Use it!
use key_set::{ KeySet };
Cargo.toml
key-hash-set = { git = "https://github.com/minghu6/rust-key-set", branch = "master" }
use key_set::{ KeySet };