C#之对象池实现代码

纯C#，泛型，可扩容
ps：一定要仔细阅读源码，不然你会提问：为什么Resize里面的循环新增时，count作为index而不是size？

using System;

namespace UnityFramework
{
    public sealed class ObjectPool<T>
        where T : new()
    {
        private int growSize = 20;

        private T[] pool;

        private int nextIndex = 0;

        public ObjectPool(int size)
        {
            Resize(size, false);
        }

        public ObjectPool(int size, int growSize)
        {
            this.growSize = growSize;

            Resize(size, false);
        }
        
        public int Length
        {
            get { return pool.Length; }
        }
        
        public int Available
        {
            get { return pool.Length - nextIndex; }
        }
        
        public int Allocated
        {
            get { return nextIndex; }
        }

        public T Allocate()
        {
            T t = default(T);