大约有 40,000 项符合查询结果（耗时：0.0480秒） [XML]
linux ls、ll命令详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...读取权限， w ： 表示修改权限， x ： 表示执行权限
1）如何修改文件权限？
u : 当前用户的权限， g ： 当前用户组的权限， o ： 当前其他用户权限
示例：a）给当前用户添加执行权限
chmod u+x text.txt
b）给当前用户组添加写权...
移动游戏项目弱网测试策略 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...的考验，也对我们移动项目的测试人员提出了新的问题，如何测试这种情况？总不能拿着手机去高铁上测试吧。
方法还是有的，网上的工具也挺多，今天就给小伙伴们分享一下基于fiddler这款工具的弱网测试方法。目前这款工...
App Inventor 2 手机蓝牙及语音控制 - App Inventor 2 中文网 - 清泛IT论坛，有思想、有深度
...rduino的学习，我们对两个平台已经初步有了认识和了解，如何打通两个平台，实现利用手机对Arduino设备进行控制呢？
蓝牙是一个非常成熟的无限近程控制技术，通过蓝牙，我们可以将两者有机结合，再加上讯飞语音，甚至...
App Inventor 2 颜色代码块 · App Inventor 2 中文网
...块
App Inventor 中的颜色如何发挥作用？
基本颜色
合成颜色
分解颜色
颜色代码块主要分为三种类型：
基本颜色
合成颜色
分解颜色
App Inventor 中的颜色如何发挥作用？
在内部，App...
How to convert timestamp to datetime in MySQL?
How to convert 1300464000 to 2011-03-18 16:00:00 in MySQL?
5 Answers
5
...
How do I include a file over 2 directories back?
... those links if you move your file, is:
require_once($_SERVER['DOCUMENT_ROOT'] . 'directory/directory/file');
DOCUMENT_ROOT is a server variable that represents the base directory that your code is located within.
share...
Python error “ImportError: No module named”
...at was affecting it was that I had another Python version installed by the root, so if someone is working with a local installation of python, be sure that the Python installation that is running the programs is the local Python. To check this, just do which python, and see if the executable is the ...
Why is SSE scalar sqrt(x) slower than rsqrt(x) * x?
...th on an Intel Core Duo, and while looking at various approaches to square root I've noticed something odd: using the SSE scalar operations, it is faster to take a reciprocal square root and multiply it to get the sqrt, than it is to use the native sqrt opcode!
...
Copy file or directories recursively in Python
...of copying files and folders recursively. (Python 3.X)
import os, shutil
root_src_dir = r'C:\MyMusic' #Path/Location of the source directory
root_dst_dir = 'D:MusicBackUp' #Path to the destination folder
for src_dir, dirs, files in os.walk(root_src_dir):
dst_dir = src_dir.replace(root_src...
How to use mysql JOIN without ON condition?
...
MySQL documentation covers this topic.
Here is a synopsis. When using join or inner join, the on condition is optional. This is different from the ANSI standard and different from almost any other database. The effect is ...