Count is set to zero, and references to other objects from elements of the collection are also released.

The capacity remains unchanged. /This method is an O(n) operation, where n is Hashtable.Count.

// Creates a Hashtable, adds 2 elements and then clears it
var h : Hashtable;
h = new Hashtable();
h.Add("1","one");
h.Add("2","two");
Debug.Log(h.Count);
h.Clear();
Debug.Log(h.Count);

using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour {
    public Hashtable h;
    void Example() {
        h = new Hashtable();
        h.Add("1", "one");
        h.Add("2", "two");
        Debug.Log(h.Count);
        h.Clear();
        Debug.Log(h.Count);
    }
}

import UnityEngine
import System.Collections

public class Example(MonoBehaviour):

	public h as Hashtable

	def Example() as void:
		h = Hashtable()
		h.Add('1', 'one')
		h.Add('2', 'two')
		Debug.Log(h.Count)
		h.Clear()
		Debug.Log(h.Count)