Iterate over anything with Iterify! This crates takes any type T and lets you iterate over a mutable reference, yielding any type you want.
It has similar behaviour to std::iter::successors except that Iterify lets you mutate the type in-place through a &mut reference.
```rust use iterify::Iterify;
fn main() { let mut num = 12; let collatz: Vec<_> = num .iterify(|num| { *num = match *num { 0 | 1 => return None, n if n % 2 != 0 => n * 3 + 1, n => n / 2, };
Some(*num)
})
.collect();
assert_eq!(collatz, &[6, 3, 10, 5, 16, 8, 4, 2, 1]);
assert_eq!(num, 1);
} ```