The GetAllChildren() Method

About

This method extends GameObject.

This method returns every GameObject as an array.

This method can be used for any task requiring all children of an object.

Example

// This script spawns 3 children and attaches itself as a parameter to them.

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using NUDev.PlusSharp;

public class Spawner : MonoBehaviour {
    public GameObject pref;
    public int spawnQty = 2;

    void Start() {
        for (int i = 0; i < spawnQty; i++) {
            var go = Instantiate(pref);
            go.transform.parent = transform;
        }
        var allChildren = gameObject.GetAllChildren();
        for (int i = 0; i < allChildren.Length; i++) {
            allChildren[i].GetComponent<Player>().manager = gameObject;
        }
    }
}