Function first_or 

pub fn first_or<T>(collection: &[T], fallback: T) -> T
where
    T: Clone,

Returns the first item from the collection. If the collection is empty, returns the provided fallback value.

Arguments

• collection - A slice of items.
• fallback - The value to return if the collection is empty.

Returns

• T - The first item in the collection. If the collection is empty, returns the fallback value.

Examples

use lowdash::first_or;

let numbers = vec![1, 2, 3];
let first_num = first_or(&numbers, 10);
assert_eq!(first_num, 1);

let empty: Vec<i32> = vec![];
let first_num = first_or(&empty, 10);
assert_eq!(first_num, 10);

use lowdash::first_or;

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

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

let first_person = first_or(&people, Person { name: "Default".to_string(), age: 0 });
assert_eq!(first_person, Person { name: "Alice".to_string(), age: 25 });

let empty_people: Vec<Person> = vec![];
let first_person = first_or(&empty_people, Person { name: "Default".to_string(), age: 0 });
assert_eq!(first_person, Person { name: "Default".to_string(), age: 0 });