How to check for a collision with any object in array?

I've been trying to figure out how to check if a specific GameObject's BoxCollider2D is touching any GameObject's BoxCollider2D that has a specific tag.

example:
How to check if my player's feet BoxCollider2D is touching any GameObject's(with tag "Ground") BoxCollider2D

 

Well, I found the answer to my own problem. So for anyone who ever has the same problem as me here you go!

To follow my example:

Code (CSharp):

1. public class PlayerController : MonoBehaviour {
2.  
3.     private Rigidbody2D playerRB;
4.     private BoxCollider2D playerFeetBC;
5.     private GameObject[] groundBCs;
6.     private BoxCollider2D groundBC;
7.  
8.     private bool canJump = false;
9.  
10.     void Start () {
11.         playerRB = GameObject.FindGameObjectWithTag("Player").GetComponent<Rigidbody2D>();
12.         playerFeetBC = GameObject.Find("PlayerFeet").GetComponent<BoxCollider2D>();
13.         groundBCs = GameObject.FindGameObjectsWithTag("Ground");
14.  
15.     }
16.  
17.     void FixedUpdate () {
18.         if (Input.GetKeyDown(KeyCode.W))
19.         {
20.             JumpCheck();
21.             if (canJump == true)
22.                 playerRB.velocity = new Vector2(playerRB.velocity.x, 5 * playerSpeed);
23.         }
24.     }
25.  
26.     private void JumpCheck()
27.     {
28.         for (int i = 0; i < groundBCs.Length; i++)
29.         {
30.             groundBC = groundBCs[i].GetComponent<BoxCollider2D>();
31.             if (playerFeetBC.IsTouching(groundBC))
32.             {
33.                 canJump = true;
34.                 break;
35.             }
36.             else
37.                 canJump = false;
38.         }
39.     }
40. }

 

You can also do this way shorter

int i = 0; //this is our index;
public GameObject[] desiredGameObject;

private void OnTriggerEnter(Collider other)
{
if(other.transform == desiredGameobject.transform)
{
//Execute code here
}
}