// Assign the texture exposed in the inspector the renderer's material
    var texture : Texture;
    renderer.material.mainTexture = texture;

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
    public Texture texture;
    void Example() {
        renderer.material.mainTexture = texture;
    }
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

    public texture as Texture

    def Example():
        renderer.material.mainTexture = texture

    // Change renderer's texture each changeInterval
    // seconds from the texture array defined in the inspector.
    var textures : Texture[];
    var changeInterval : float = 0.33;
    function Update() {
        if( textures.length == 0 ) // nothing if no textures
            return;
        // we want this texture index now
        var index : int = Time.time / changeInterval;
        // take a modulo with size so that animation repeats
        index = index % textures.length;
        // assign it
        renderer.material.mainTexture = textures[index];
    }

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
    public Texture[] textures;
    public float changeInterval = 0.33F;
    void Update() {
        if (textures.length == 0)
            return;
        
        int index = Time.time / changeInterval;
        index = index % textures.length;
        renderer.material.mainTexture = textures[index];
    }
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

    public textures as (Texture)

    public changeInterval as single = 0.33F

    def Update():
        if textures.length == 0:
            return
        index as int = (Time.time / changeInterval)
        index = (index % textures.length)
        renderer.material.mainTexture = textures[index]