Function replace_n 

pub fn replace_n<T: PartialEq + Clone>(
    vec: &mut Vec<T>,
    old: T,
    new: T,
    n: usize,
)

Replace the first count n old elements with new elements within the vector.

Arguments

• vec - The vector to replace.

• old - old item to be replaced.

• new - new item to replace.

• n - the number of old elements bo be replaced.

Examples

use rufl::collection;

let mut vec = vec!["a", "b", "c", "b"];

let result = collection::replace_n(&mut vec, "b", "2", 1);

assert_eq!(vec!["a", "2", "c", "b"], vec);