// Creates 5 planes and hides them from the Hierarchy in the Editor.

function Start() {
    for(var i : int = 0; i < 5; i++) {
        var createdGO : GameObject = GameObject.CreatePrimitive(PrimitiveType.Plane);
        createdGO.hideFlags = HideFlags.HideInHierarchy;
    }
}

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
    void Start() {
        int i = 0;
        while (i < 5) {
            GameObject createdGO = GameObject.CreatePrimitive(PrimitiveType.Plane);
            createdGO.hideFlags = HideFlags.HideInHierarchy;
            i++;
        }
    }
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

    def Start():
        i as int = 0
        while i < 5:
            createdGO as GameObject = GameObject.CreatePrimitive(PrimitiveType.Plane)
            createdGO.hideFlags = HideFlags.HideInHierarchy
            i++