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How to Calculate Execution Time of a Code Snippet in C++
... of a C++ code snippet in seconds. It must be working either on Windows or Unix machines.
18 Answers
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Unix shell script to truncate a large file
I am trying to write a Unix script which will truncate/empty a file which is continuously being written/open by an application when it reaches say 3GB of space. I know that the below command would do it :
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Windows equivalent to UNIX pwd
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cd without any parameters is equivalent to pwd on Unix/Linux.
From the console output of typing cd /?:
Displays the name of or changes the current directory.
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Type CD without parameters to display the current drive and directory.
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Convert decimal to hexadecimal in UNIX shell script
In a UNIX shell script, what can I use to convert decimal numbers into hexadecimal? I thought od would do the trick, but it's not realizing I'm feeding it ASCII representations of numbers.
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Convert unix time to readable date in pandas dataframe
I have a dataframe with unix times and prices in it. I want to convert the index column so that it shows in human readable dates.
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unix diff side-to-side results?
How can I plot the results of a unix diff command side-to-side instead of one difference after the other? See below for an example:
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How do I set the time zone of MySQL?
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It will return 02:00:00 if your timezone is +2:00.
To get the current UNIX timestamp:
SELECT UNIX_TIMESTAMP();
SELECT UNIX_TIMESTAMP(NOW());
To get the timestamp column as a UNIX timestamp
SELECT UNIX_TIMESTAMP(`timestamp`) FROM `table_name`
To get a UTC datetime column as a UNIX timestam...
Java内存泄露原因详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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{
System.out.println(person);
}
}
3、监听器
在java 编程中，我们都需要和监听器打交道，通常一个应用当中会用到很多监听器，我们会调用一个控件的诸如addXXXListener()等方法来增加监听器，但往往在释放对象的时候却没...
Convert line-endings for whole directory tree (Git)
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dos2unix does that for you. Fairly straight forward process.
dos2unix filename
Thanks to toolbear, here is a one-liner that recursively replaces line endings and properly handles whitespace, quotes, and shell meta chars.
find ...
Office在线预览及PDF在线预览的实现方式大集合 - 更多技术 - 清泛网 - 专注...
...浏览器直接调用本地Office或PDF软件打开
优点：
1、不用编程，不用第三方服务，直截了当。
2、很多用户安装了Adobe的PDF预览软件，同时在浏览器上也直接安装了插件，浏览器可直接查看PDF文件。
缺点
你永远不知道客户机器...