// ============================================================================
// 021 — List Basics
// ============================================================================
// Creating lists, accessing elements, appending, and getting length.
//
// Run:   soma run 021_list_basics.cell run
// Expect:
//   nums: [1, 2, 3]
//   length: 3
//   appended: [1, 2, 3, 4]
//   new length: 4
//   empty: []
//   empty length: 0

cell ListBasics {

    on run() {
        // list() creates a new list with the given elements
        let nums = list(1, 2, 3)
        print("nums: {nums}")

        // .length gives the number of elements
        let count = nums.length
        print("length: {count}")

        // list(existing, item) appends an item (creates new list)
        let bigger = list(nums, 4)
        print("appended: {bigger}")
        let new_count = bigger.length
        print("new length: {new_count}")

        // Empty list
        let empty = list()
        print("empty: {empty}")
        let elen = empty.length
        print("empty length: {elen}")

        return "done"
    }
}