Function count 

pub fn count<T>(collection: &[T], value: T) -> usize
where
    T: PartialEq,

Counts the number of occurrences of a specific value in a collection.

This function iterates over a slice of items and returns the number of times the specified value appears in the collection.

Time Complexity: O(n), where n is the number of elements in the collection.

Arguments

• collection - A slice of items in which to count occurrences of value.
• value - The value to count within the collection.

Type Parameters

• T - The type of elements in the collection. Must implement PartialEq.

Returns

• usize - The number of times value appears in collection.

Examples

use lowdash::count;

let numbers = vec![1, 2, 2, 3, 4, 2];
let result = count(&numbers, 2);
assert_eq!(result, 3);

use lowdash::count;

#[derive(Debug, PartialEq)]
struct Person {
    name: String,
    age: u32,
}

let people = vec![
    Person { name: "Alice".to_string(), age: 25 },
    Person { name: "Bob".to_string(), age: 30 },
    Person { name: "Alice".to_string(), age: 25 },
];

let count_alice = count(&people, Person { name: "Alice".to_string(), age: 25 });
assert_eq!(count_alice, 2);