Is it possible: "getComponent<_array_element_$>"?

Question

Am am new one in Unity C#, so probably my request is nonsence due to platform limitations. Also, please excuse my english, I fear it will contant mistakes.

I know about http://answers.unity3d.com/questions/406655/getcomponent-possible.html but it seems like it doesn't fit my needs (or I am too noob to understand how it does).

For some reasons I need to check GameObjects for some (nearly random) scripts and turn it on/off on raycast. But when I tried to use some kind of that - it was a failure. GetComponent just do not want to use string variable as component name. How may I do this?

Actual (non-workable) listing:

 using UnityEngine;
 using System.Collections;
 
 public class RaycastFunctionSwither : MonoBehaviour {
 
     public string components;
     public float distance;
     private string element;
 
     // Use this for initialization
     void Start () {
     
     }
     
     // Update is called once per frame
     void Update () {
         string subject;
         string old_subject;
 
         if (Input.GetKeyDown("e"))
         {//if user want to use it
             var hit = RaycastHit;
             var ray = Camera.main.ScreenPointToRay(Input.mousePosition);
             if (Physics.Raycast(ray, hit, distance))
             {//raycast gives new object, so old became an old one
                 old_subject = subject;
                 subject = hit.collider.gameObject.name;
 
                 if (subject != old_subject)
                 {
                     foreach (var Element in components)
                     {//check and turn off
                         if (old_subject.GetComponent(Element))
                         {
                             old_subject.GetComponent<element>().enable = false;
                         }
                     }
                     if (subject != null)
                     {//если объект != старый объект И объект != null
                         foreach (string element in components)
                         {//check and turn on
                             if (subject.GetComponent<element>)
                             {
                                 subject.GetComponent<element>().enable = true;
                             }
                         }
                     }
                 }
             }
         }
         else if (Input.GetKeyUp("e"))
         {   //check and turn off
             foreach (var element in components)
             {//check and turn off
                 if (old_subject.GetComponent<element>)
                 {
                     old_subject.GetComponent<element>().enable = false;
                 }
             }
         }
     }
 }

Answer 1

UPDATED ANSWER

 using UnityEngine;
 using System.Collections;
 
 public class RaycastFunctionSwither : MonoBehaviour
 {
     public string[] componentNames;
     public float distance;
     private Collider lastTarget ;
 
     // Update is called once per frame
     void Update ()
     {
         if (Input.GetKeyDown(KeyCode.E))
         {
             Collider hitCollider ;
             RaycastHit hit ;
             Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
             if (Physics.Raycast(ray, hit, distance))
             {
                 hitCollider = hit.collider;
 
                 // Check if target is the same as the old one
                 if ( lastTarget.GetInstanceID() != hitCollider.GetInstanceID() )
                 {
                     EnableComponents( lastTarget.gameObject, false ) ;
                     EnableComponents( hitCollider.gameObject, true ) ;
                 }
             }
         }
         else if (Input.GetKeyUp(KeyCode.E) && lastTarget != null )
         {
             EnableComponents( lastTarget.gameObject, true ) ;
         }
     }
     
     private void EnableComponents( GameObject target, bool enable )
     {
         foreach (string name in componentNames)
         {
             MonoBehaviour monoBehaviour = target.GetComponent( name ) as MonoBehaviour ;
             if ( monoBehaviour != null )
                 monoBehaviour.enabled = enable ;
         }
     }
 }

Note : Be very careful with the leter case when adding the components name in the components array !

INITIAL ANSWER

First of all : components is not declared as an array

Then try to get the component using the string version of GetComponent :

 private void EnableComponents( GameObject target, bool enable )
 {
     foreach (var element in components)
     {
         MonoBehaviour monoBehaviour = target.GetComponent( element ) as MonoBehaviour ;
         if ( monoBehaviour != null )
                monoBehaviour.enabled = enable ;
     }
 }

Then :

      // [...]
      else if (Input.GetKeyUp("e"))
      {
          EnableComponents( old_subject, false ) ;
      }

Is it possible: "getComponent<_array_element_$>"?

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