symbol

Simple globally interned strings.

Features and Optional Dependencies

gc: Symbol impls Trace and Finalize if the gc feature is enabled.

License

Licensed under either of

• Apache License, Version 2.0, (http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (http://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

lib.rs:

Simple globally interned strings.

Usage

let s1: Symbol = "asdf".into();
assert_eq!(s1, "asdf");

let s2: Symbol = "asdf".into();
let s3: Symbol = "qwerty".into();

assert_eq!(s1, s2);
assert_eq!(s1.addr(), s2.addr());

assert_ne!(s2.addr(), s3.addr());

let s4 = Symbol::gensym();
assert_eq!(s4, "G#0");

let s5: Symbol = "G#1".into();
assert_eq!(s5, "G#1");

// symbol notices that G#1 is in use
let s6 = Symbol::gensym();
assert_eq!(s6, "G#2");