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How can I combine hashes in Perl?
...rst place? (eg. undef, zero, empty string, false, falsy ...)
See also
PM post on merging hashes
PM Categorical Q&A hash union
Perl Cookbook 5.10. Merging Hashes
websearch://perlfaq "merge two hashes"
websearch://perl merge hash
https://metacpan.org/pod/Hash::Merge
Footnotes
1 * (aka as...
浅谈HTML5 & CSS3的新交互特性 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...个角不是圆角。
4. @font-face
当网页显示某种用户没有安装的字体时，CSS3提供的@font-face功能会自动的、默默地帮用户从网络上下载相应字体。从而让设计师更加自由的发挥，而不用考虑用户的机器是否安装了相应字体。
5. 其...
What is a race condition?
...
What is a Race Condition?
You are planning to go to a movie at 5 pm. You inquire about the availability of the tickets at 4 pm. The representative says that they are available. You relax and reach the ticket window 5 minutes before the show. I'm sure you can guess what happens: it's a full...
Alarm Manager Example
...d onReceive(Context context, Intent intent)
{
PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "");
wl.acquire();
// Put here YOUR code.
Toast.m...
Finding the number of days between two dates
...amp, then you agree with me: the difference between the UNIX timestamp at 1PM on $day and the UNIX timestamp at 1PM on $day+1 is not always 86400 seconds in timezones that observe DST. It may be 23 or 25 hours' worth of seconds instead of 24 hours.
– toon81
Dec...
How to import other Python files?
...odule name as a string. (Again: module name without the '.py' extension.)
pmName = input('Enter module name:')
pm = __import__(pmName)
print(dir(pm))
Type help(__import__) for more details.
share
|
...
How do I upload a file with metadata using a REST web service?
... meets second Wednesday of each month.",
"fixture":"Wednesday 7pm",
"capacity":"",
"previousScore":""
},
{
"point":new GLatLng(40.211600,-74.695702),
"homeTeam":"Hamilton Library",
"awayTeam":"LUGip HW SIG",
...
当ORACLE 11G 遇到 JUNIPER 防火墙 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...
\\HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE\HOMEDIR （HOMEDIR是你机器上安装的oracle数据库的instance名称）中添加一个字符串键值，名称为USE_SHARED_SOCKET，值为TRUE（注意大小写），然后重启oracle instance或直接重启windows就OK了。
照做 不行
原...
Parse string to DateTime in C#
... "MM/dd/yyyy hh:mm", "M/dd/yyyy hh:mm"};
var dtStr="5/1/2009 6:32 PM";
var dt=dtStr.ToDate(dateFmt);
If you have only a few template patterns, you can also write:
var dateStr = "2011-03-21 13:26";
var dt = dateStr.ToDate("yyyy-MM-dd HH:mm", "M/d/yyyy h:mm:ss tt");
Advanced examples ...