Macro llist 

macro_rules! llist {
    (
  $( $key: expr ),* $( , )?
 ) => { ... };
}

Function and structures to work with collections. Creates a LinkedList from a llist of elements.

The llist macro facilitates the creation of a LinkedList with initial elements.

Origin

This collection is reexported from alloc.

Syntax

The macro can be called with a comma-separated llist of elements. A trailing comma is optional.

// LinkedList of i32
let lst1 = llist!( 1, 2, 3, 4, 5 );

// LinkedList of &str
let lst2 = llist!{ "hello", "world", "rust" };

// With trailing comma
let lst3 = llist!( 1.1, 2.2, 3.3, );

Parameters

• $( $key: expr ),* $( , )? : A comma-separated llist of elements to insert into the LinkedList. Each element can be of any type that implements the Into< T > trait, where T is the type stored in the LinkedList.

Returns

Returns a LinkedList containing all the specified elements. The capacity of the llist is dynamically adjusted based on the number of elements provided.

Example

Basic usage with integers :

let lst = llist!( 1, 2, 3 );
assert_eq!( lst.front(), Some( &1 ) ); // The first element is 1
assert_eq!( lst.back(), Some( &3 ) ); // The last element is 3

Example

Creating a LinkedList of &str from string literals :

let fruits = llist!{ "apple", "banana", "cherry" };
assert_eq!( fruits.front(), Some( &"apple" ) ); // The first element
assert_eq!( fruits.back(), Some( &"cherry" ) ); // The last element