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How to use WinForms progress bar?
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Hey there's a useful tutorial on Dot Net pearls: http://www.dotnetperls.com/progressbar
In agreement with Peter, you need to use some amount of threading or the program will just hang, somewhat defeating the purpose.
Example that uses ProgressBar and BackgroundWorker: C#
using ...
How to get back to most recent version in Git?
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Community♦
111 silver badge
answered Oct 27 '11 at 5:04
haridsvharidsv
6,33233 gold badge...
Where do I find the bashrc file on Mac?
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Peter Party BusPeter Party Bus
1,7211111 silver badges1515 bronze badges
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Is there already a Google+ API? [closed]
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It is just released..
http://www.globinch.com/2011/09/15/google-api-released-supports-access-to-public-data/
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通过API获取IP信息、IP归属地 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...。
缺点：运营商解析有时为空。
三、ip138：http://www.ip138.com/ips138.asp?ip=8.8.8.8
返回一个网页，需要按照html规则使用正则表达式解析出相应内容，比较繁琐，不过ip138结果还比较准确。
缺点：非json数据，解析繁琐。
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C++ 使用OLE/COM高速读写EXCEL的源码 - c++1y / stl - 清泛IT社区，为创新赋能！
本源码主要通过OLE/COM实现对Excel表格的操作。
另外，代码中汇聚各网友的智慧进行了优化（比如预加载等），可以加快OLE读取的EXCEL的速度。
原文详见：http://www.tsingfun.com/html/2016/dev_0530/1454.html
下载地址：
Sample random rows in dataframe
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5 0.4180331 -1.2592415
6 0.7572246 -0.5463655
7 -0.8996483 0.4231117
8 -1.0356774 -0.1640883
9 -0.3983045 0.7157506
10 -0.9060305 2.3234110
Then select some rows at random:
> df[sample(nrow(df), 3), ]
X1 X2
9 -0.3983045 0.7157506
2 -1.1334614 -0.1973846
10 ...
Tick symbol in HTML/XHTML
...pt X (poorly supported as of 2017)
⮽ (⚠ hex: ⮽ / dec: ⮽): ballot box with light X (poorly supported as of 2017)
???? (⚠ hex: 🗵 / dec: 🗵): ballot box with script X (poorly supported as of 2017)
???? (⚠ hex: 🗹 / dec: 🗹): bal...
“X does not name a type” error in C++
... // now that foo is defined, we can read that reference:
fr.fooInt = 111605;
fr.foDouble = 123.456;
}
By forward declaring User, MyMessageBox can still form a pointer or reference to it:
class User; // let the compiler know such a class will be defined
class MyMessageBox
{
public:
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Differences between Intent and PendingIntent
...g a URI
Intent i = new Intent(Intent.ACTION_VIEW,
Uri.parse("http://www.example.com"));
// Starts Implicit Activity
startActivity(i);
Pending Intent
A PendingIntent is a token that you give to a foreign application (e.g. NotificationManager, AlarmManager, Home Screen AppWidgetManager,...