Itertools — extra iterator adaptors, functions and macros.
To use the iterator methods in this crate, import the [`Itertools` trait](./trait.Itertools.html):
```ignore
use itertools::Itertools;
```
Some iterators or adaptors are used directly like regular structs, for example
[`PutBack`](./struct.PutBack.html), [`Unfold`](./struct.Unfold.html),
[`Zip`](./struct.Zip.html), [`Stride`](./struct.Stride.html)
To enable the macros in this crate, use the `#[macro_use]` attribute:
```ignore
#[macro_use] extern crate itertools;
```
## License
Dual-licensed to be compatible with the Rust project.
Licensed under the Apache License, Version 2.0
http://www.apache.org/licenses/LICENSE-2.0 or the MIT license
http://opensource.org/licenses/MIT, at your
option. This file may not be copied, modified, or distributed
except according to those terms.