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Why are dates calculated from January 1st, 1970?
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It is the standard of Unix time.
Unix time, or POSIX time, is a system for describing points in time, defined as the number of seconds elapsed since midnight proleptic Coordinated Universal Time (UTC) of January 1, 1970, not counting leap seconds.
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How do I run a node.js app as a background service?
Since this post has gotten a lot of attention over the years, I've listed the top solutions per platform at the bottom of this post.
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Number of lines in a file in Java
...n (count == 0 && !empty) ? 1 : count;
} finally {
is.close();
}
}
EDIT, 9 1/2 years later: I have practically no java experience, but anyways I have tried to benchmark this code against the LineNumberReader solution below since it bothered me that nobody did it. It seems th...
Daylight saving time and time zone best practices [closed]
...m UTC. Notice that UTC is also known as Zulu or Z time.)
If instead you choose to persist a time using a local time value, include the local time offset for this particular time from UTC (this offset may change throughout the year), such that the timestamp can later be interpreted unambiguously.
In...
“please check gdb is codesigned - see taskgated(8)” - How to get gdb installed with homebrew code si
I'm under osx 10.8.4 and have installed gdb 7.5.1 with homebrew (motivation get a new gdb with new features such as --with-python etc... )
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房多多：懂用户比懂互联网重要 - 资讯 - 清泛网 - 专注C/C++及内核技术
...迟早会被改变，所以我们开始做房多多。
房多多第一套系统上线的时候，我们什么商业模式都没想好，只是觉得一边把新房放上来，另一边把经纪人放上来，就可以提高售房效率。
移动互联时代，人手一部智能手机，App成了...
如何查看Oracle用户的SQL执行历史记录？ - 数据库(内核) - 清泛网 - 专注C/...
...启附加日志
alter database add supplemental log data;
--模拟DML操作
conn p_chenming/...
SQL> select * from test2;
SQL> insert into test2 values(7,77);
SQL> commit;
conn / as sysdba
--切归档
SQL> alter system switch logfile;
SQL> select name,dest_id,thread#,sequence# from v...
Open file dialog and select a file using WPF controls and C#
...(object sender, RoutedEventArgs e)
{
// Create OpenFileDialog
Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
// Set filter for file extension and default file extension
dlg.DefaultExt = ".png";
dlg.Filter = "JPEG Files (*.jpeg)|*.jpeg|PNG Files (*...
Get Character value from KeyCode in JavaScript… then trim
...41 (according to, for example, http://www.utf8-chartable.de/). However, those are hex values, converting to decimal gives us a charcode of 65 for "A" and 97 for "a".[1] This is consistent with what we get from String.fromCharCode for these values.
My own requirement was limited to processing numb...
【AI2+AI】人工智能舞姿识别App - 创客硬件开发 - 清泛IT社区，为创新赋能！
...要的外观和感觉。但不要重命名组件，因为本教程会使用操作指南中给出的名称。SwapCameraButton按钮可以根据用户的意愿切换前置或后置摄像头。CanvasLiveButton将画布背景从纯黑色切换到实时摄像机视图。ResetButton设置Dance Score得分...