Jadual Kandungan
对照实验(1)-批量清理系统临时文件,对照实验清理
Rumah php教程 php手册 对照实验(1)-批量清理系统临时文件,对照实验清理

对照实验(1)-批量清理系统临时文件,对照实验清理

Jun 13, 2016 am 08:46 AM

对照实验(1)-批量清理系统临时文件,对照实验清理

语言之争由来已久,下面做一些IO实验(遍历9G多的文件,批量删除),尽量用事实来比较谁优谁劣。操作系统:win7 64 位,文件包大小:9.68G。

一、语言:C#

开发环境:vs 2013

代码总行数:43行

耗时:7秒

代码:

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

using System;

using System.Collections.Generic;

using System.IO;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

 

namespace BatchDelete

{

    class Program

    {

        static void Main(string[] args)

        {

            // 输入目录 e:\tmp

            string path;

            Console.WriteLine("输入要清理的目录:");

            path = Console.ReadLine();

            // 开始计时

            Console.WriteLine("开始计时:"+DateTime.Now.ToString("HH:mm:ss"));

            // 先遍历匹配查找再循环删除

            if (Directory.Exists(path))

            {

                Console.Write("正在删除");

                foreach (string fileName in Directory.GetFileSystemEntries(path))

                {

                    if (File.Exists(fileName) && fileName.Contains("cachegrind.out"))

                    {

                        File.Delete(fileName);

                    }

                }

                Console.WriteLine("");

            }

            else

            {

                Console.WriteLine("该目录不存在!");

            }

            // 计时结束

            Console.WriteLine("结束计时:" + DateTime.Now.ToString("HH:mm:ss"));

            Console.ReadKey();

        }

    }

}

Salin selepas log masuk

运行效果图:

二、语言:C/C++

开发环境:vs 2013

代码总行数:50行

耗时:36秒

代码:

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

#include <iostream><span>

#include </span><<span>string</span>><span>

#include </span><Windows.h><span>

#include </span><boost\filesystem\operations.hpp><span>

#include </span><boost\filesystem\path.hpp><span>

#include </span><boost\filesystem\convenience.hpp><span>

#include </span><boost\algorithm\<span>string</span>.hpp>

<span>using</span> <span>namespace</span><span> std;

 

</span><span>int</span> main(<span>int</span> argc, <span>char</span> *<span> argv[])

{

    </span><span>//</span><span> 输入目录 e:\tmp</span>

    <span>string</span><span> strPath;

    cout </span><< <span>"</span><span>输入要清理的目录:</span><span>"</span> <<<span> endl;

    getline(cin, strPath);

    </span><span>//</span><span> 开始计时    </span>

    SYSTEMTIME sys_time;        <span>//</span><span>声明变量</span>

    GetLocalTime(&sys_time);    <span>//</span><span>将变量值设置为本地时间</span>

    printf(<span>"</span><span>开始计时:%02d:%02d:%02d\n</span><span>"</span><span>, sys_time.wHour,sys_time.wMinute,sys_time.wSecond);

    </span><span>//</span><span> 先遍历匹配查找再循环删除</span>

    <span>namespace</span> fs =<span> boost::filesystem;

    fs::path full_path(fs::initial_path());

    full_path </span>=<span> fs::system_complete(fs::path(strPath, fs::native));

    </span><span>if</span><span> (fs::exists(full_path))

    {

        cout </span><< <span>"</span><span>正在删除</span><span>"</span><span> ;

        fs::directory_iterator item_begin(full_path);

        fs::directory_iterator item_end;

        </span><span>for</span> (; item_begin != item_end; item_begin++<span>)

        {

            </span><span>if</span> (!fs::is_directory(*<span>item_begin))

            {

                </span><span>if</span> (fs::exists(item_begin->path()) && boost::contains(item_begin->path().<span>string</span>(), <span>"</span><span>cachegrind.out</span><span>"</span><span>))

                {

                    fs::remove(item_begin</span>-><span>path());

                }

            }

        }

        cout </span><< <span>""</span> <<<span> endl;

    }

    </span><span>else</span><span>

    {

        cout </span><< <span>"</span><span>该目录不存在!</span><span>"</span> <<<span> endl;

    }

    </span><span>//</span><span> 计时结束</span>

    GetLocalTime(&<span>sys_time);

    printf(</span><span>"</span><span>计时结束:%02d:%02d:%02d\n</span><span>"</span><span>, sys_time.wHour, sys_time.wMinute, sys_time.wSecond);

    system(</span><span>"</span><span>pause</span><span>"</span><span>);

    </span><span>return</span> <span>0</span><span>;

}</span>

Salin selepas log masuk

运行效果图:

三、语言:PHP

开发环境:Phpstorm

代码总行数:32行

耗时:13秒

代码:

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

<?php

/**

 * Created by PhpStorm.

 * User: Administrator

 * Date: 16-1-29

 * Time: 上午9:31

 */

date_default_timezone_set('prc');

//输入目录 e:\tmp

$path = 'e:\tmp';

//开始计时

echo date("H:i:s",time()) . '<br/>';

//先遍历匹配查找再循环删除

if(is_dir($path))

{

    echo "正在删除";

    $mydir = dir($path);

    while($file = $mydir->read())

    {

        if(file_exists("$path/$file") && strpos($file, 'cachegrind.out') === 0)

        {

            unlink("$path/$file");

        }

    }

    echo '<br/>';

}

else

{

    echo "该目录不存在!" . '<br/>';

}

//计时结束

echo date("H:i:s",time()) . '<br/>';

Salin selepas log masuk

运行效果图:

四、语言:Java

开发环境:eclipse

代码总行数:43行

耗时:10秒

代码:

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

package com.yejing;

 

import java.io.File;

import java.text.SimpleDateFormat;

import java.util.Date;

import java.util.Scanner;

 

public class Test {

 

    public static void main(String[] args) {

        Scanner s = new Scanner(System.in);

        // 输入目录 e:\tmp

        String path = null;

        System.out.println("输入要清理的目录:");

        path = s.next();

        // 开始计时

        Date nowTime=new Date();

        SimpleDateFormat time=new SimpleDateFormat("HH:mm:ss");

        System.out.println("开始计时:"+ time.format(nowTime));

        // 先遍历匹配查找再循环删除

        File dir = new File(path);

        if(dir.exists()){

            System.out.print("正在删除");

            File[] fs = dir.listFiles();

            for(int i=0;i<fs.length;i++){

                if(!fs[i].isDirectory()){

                    if(fs[i].isFile() && fs[i].exists() && fs[i].getName().contains("cachegrind.out"))

                    {

                        fs[i].delete(); 

                    }

                }

            }

            System.out.println("");

        }else{

            System.out.println("该目录不存在!");

        }

        // 计时结束

        nowTime=new Date();

        System.out.println("开始计时:"+ time.format(nowTime));

    }

 

}

Salin selepas log masuk

运行效果图:

五、语言:Python 3.3.5

开发环境:IDLE

代码总行数:20行

耗时:10秒

代码:

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

# -*- coding: utf-8 -*- 

import datetime

import os

  

# 输入目录 e:\tmp

path = input("输入要清理的目录:\n");

# 开始计时

print("开始计时:",datetime.datetime.now().strftime('%H:%M:%S'));

# 先遍历匹配查找再循环删除

if(os.path.exists(path)):

    print("正在删除");

    for parent,dirnames,filenames in os.walk(path):

        for filename in filenames:

            targetFile = os.path.join(parent,filename)

            if (os.path.isfile(targetFile) and "cachegrind.out" in targetFile):

                os.remove(targetFile)

else:

    print("该目录不存在!");

# 计时结束

print("结束计时:",datetime.datetime.now().strftime('%H:%M:%S'));

Salin selepas log masuk

运行效果图:

Kenyataan Laman Web ini
Kandungan artikel ini disumbangkan secara sukarela oleh netizen, dan hak cipta adalah milik pengarang asal. Laman web ini tidak memikul tanggungjawab undang-undang yang sepadan. Jika anda menemui sebarang kandungan yang disyaki plagiarisme atau pelanggaran, sila hubungi admin@php.cn

Tag artikel panas

Notepad++7.3.1

Notepad++7.3.1

Editor kod yang mudah digunakan dan percuma

SublimeText3 versi Cina

SublimeText3 versi Cina

Versi Cina, sangat mudah digunakan

Hantar Studio 13.0.1

Hantar Studio 13.0.1

Persekitaran pembangunan bersepadu PHP yang berkuasa

Dreamweaver CS6

Dreamweaver CS6

Alat pembangunan web visual

SublimeText3 versi Mac

SublimeText3 versi Mac

Perisian penyuntingan kod peringkat Tuhan (SublimeText3)