Itertools's step_by() has been implemented in std::iter

[chawyehsu]

https://doc.rust-lang.org/std/iter/trait.Iterator.html#method.step_by
https://docs.rs/itertools/0.10.0/itertools/trait.Itertools.html#method.step

The following snippet should be removed or updated.

Remember how we used filter() to produce a range of even numbers? Itertools has a handy step_by() method for that.

extern crate itertools;
use itertools::Itertools;

for i in (0..11).step_by(2) {
    print!("{} ", i);
}

//output: 0 2 4 6 8 10

[rustomax]

Fixed in the latest commit. Thanks for the heads-up.