{"id":1107,"date":"2017-04-24T16:44:39","date_gmt":"2017-04-24T08:44:39","guid":{"rendered":"http:\/\/39.100.100.179\/?p=1107"},"modified":"2017-04-24T17:07:48","modified_gmt":"2017-04-24T09:07:48","slug":"%e5%87%8f%e5%b0%91gc%e4%b9%8b-list%e3%80%81dict%e7%9a%84%e9%81%8d%e5%8e%86","status":"publish","type":"post","link":"http:\/\/www.u3d8.com\/?p=1107","title":{"rendered":"\u51cf\u5c11gc\u4e4b\u2014\u2014List\u3001Dict\u7684\u904d\u5386"},"content":{"rendered":"

\u8f6c\u81ea\uff1ahttp:\/\/blog.csdn.net\/lyh916\/article\/details\/52194998<\/p>\n

\u53c2\u8003\u94fe\u63a5\uff1a<\/p>\n

http:\/\/www.cnblogs.com\/mrkelly\/p\/5391156.html#3415238<\/p>\n

http:\/\/www.cnblogs.com\/murongxiaopifu\/p\/4284988.html#GC<\/p>\n

\u4e00.\u51cf\u5c11\u4f7f\u7528foreach<\/p>\n

\u9996\u5148\u56de\u987e\u4e00\u4e0bIEnumerable\u548cIEnumerator<\/p>\n

public interface IEnumerable  \r\n{  \r\n    IEnumerator GetEnumerator();  \r\n}<\/pre>\n
public interface IEnumerator  \r\n{  \r\n    bool MoveNext();  \r\n    object Current { get; }  \r\n    void Reset();  \r\n}<\/pre>\n
\u5982\u679c\u4e00\u4e2a\u96c6\u5408\u8981\u4f7f\u7528foreach\u8fdb\u884c\u904d\u5386\uff0c\u90a3\u4e48\u9700\u8981\u5b9e\u73b0IEnumerable\u8fd9\u4e2a\u63a5\u53e3\u3002<\/p>\n
\u4e0b\u9762\u56de\u5230\u6b63\u9898\uff0c\u6d4b\u8bd5\u4e00\u4e0b\uff1a<\/p>\n
using UnityEngine;  \r\nusing System.Collections;  \r\nusing System.Collections.Generic;  \r\n  \r\npublic class TestCSharp : MonoBehaviour {  \r\n  \r\n    private List<int> list = new List<int>();  \r\n    private Dictionary<int, int> dict = new Dictionary<int, int>();  \r\n    private int sum;  \r\n  \r\n    void Start ()   \r\n    {  \r\n        for (int i = 0; i < 1000; i++)  \r\n        {  \r\n            list.Add(i);  \r\n            dict.Add(i, i);  \r\n        }  \r\n  \r\n        sum = 0;  \r\n        Profiler.BeginSample(\"ForList\");  \r\n        for (int i = 0; i < list.Count; i++)  \r\n        {  \r\n            sum += i;  \r\n        }  \r\n        Profiler.EndSample();  \r\n        Debug.Log(sum);  \r\n  \r\n        sum = 0;  \r\n        Profiler.BeginSample(\"ForeachList\");  \r\n        foreach (var item in list)  \r\n        {  \r\n            sum += item;  \r\n        }  \r\n        Profiler.EndSample();  \r\n        Debug.Log(sum);  \r\n  \r\n        sum = 0;  \r\n        Profiler.BeginSample(\"EnumeratorList\");  \r\n        var listEnumerator = list.GetEnumerator();  \r\n        while (listEnumerator.MoveNext())  \r\n        {  \r\n            sum += listEnumerator.Current;  \r\n        }  \r\n        Profiler.EndSample();  \r\n        Debug.Log(sum);  \r\n  \r\n        \/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/  \r\n  \r\n        sum = 0;  \r\n        Profiler.BeginSample(\"ForDict\");  \r\n        \/\/\u5b57\u5178\u53ef\u4ee5\u770b\u4f5c\u4e24\u4e2alist\uff0c\u4e00\u4e2alist\u5b58key\uff0c\u4e00\u4e2alist\u5b58value  \r\n        \/\/\u4e24\u4e2alist\u662f\u4e00\u4e00\u5bf9\u5e94\u7684\u5173\u7cfb  \r\n        List<int> keys = new List<int>(dict.Keys);  \r\n        for (int i = 0; i < dict.Count; i++)  \r\n        {  \r\n            sum += dict[keys[i]];  \r\n        }  \r\n        Profiler.EndSample();  \r\n        Debug.Log(sum);  \r\n  \r\n        sum = 0;  \r\n        Profiler.BeginSample(\"ForeachDict\");  \r\n        foreach (var item in dict)  \r\n        {  \r\n            sum += item.Value;  \r\n        }  \r\n        Profiler.EndSample();  \r\n        Debug.Log(sum);  \r\n  \r\n        sum = 0;  \r\n        Profiler.BeginSample(\"EnumeratorDict\");  \r\n        var dictEnumerator = dict.GetEnumerator();  \r\n        while (dictEnumerator.MoveNext())  \r\n        {  \r\n            sum += dictEnumerator.Current.Value;  \r\n        }  \r\n        Profiler.EndSample();  \r\n        Debug.Log(sum);  \r\n    }  \r\n      \r\n}<\/pre>\n
\"\u51cf\u5c11gc\u4e4b\u2014\u2014List\u3001Dict\u7684\u904d\u5386<\/a><\/p>\n
\u7ed3\u8bba\uff1a\u4ecegc\u548c\u901f\u5ea6\u6765\u770b\uff0c\u4f7f\u7528GetEnumerator()\u6765\u904d\u5386\u96c6\u5408\u662f\u6700\u597d\u7684\u3002\u8fd9\u91cc\u6211\u5efa\u8bae\u4f7f\u7528for\u904d\u5386list\uff0c\u4f7f\u7528GetEnumerator\u904d\u5386\u5b57\u5178\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u8f6c\u81ea\uff1ahttp:\/\/blog.csdn.net\/lyh916\/article\/d … \u7ee7\u7eed\u9605\u8bfb →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[4,252],"tags":[250,251],"_links":{"self":[{"href":"http:\/\/www.u3d8.com\/index.php?rest_route=\/wp\/v2\/posts\/1107"}],"collection":[{"href":"http:\/\/www.u3d8.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.u3d8.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.u3d8.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.u3d8.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1107"}],"version-history":[{"count":2,"href":"http:\/\/www.u3d8.com\/index.php?rest_route=\/wp\/v2\/posts\/1107\/revisions"}],"predecessor-version":[{"id":1110,"href":"http:\/\/www.u3d8.com\/index.php?rest_route=\/wp\/v2\/posts\/1107\/revisions\/1110"}],"wp:attachment":[{"href":"http:\/\/www.u3d8.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1107"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.u3d8.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1107"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.u3d8.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1107"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}