Function step_count::step_count_from

pub fn step_count_from<T: Step>(iter: impl IntoIterator, start: T) -> T

Consumes the iterator, counting the number of iterations, starting from a given value. This uses the Step trait to keep track of the count of iterations.

Note: This function takes any implementation of IntoIterator, which includes iterators themselves.

Panics

Panics if the count exceeds the capacity of the count type (T).

Examples

Basic usage:

let arr = [1, 2, 3];
let count: u16 = step_count_from(arr, 2);
assert_eq!(count, 5);

Overflow:

let arr = [(); u8::MAX as usize - 1];
step_count_from::<u8>(arr, 2);