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How to form tuple column from two columns in Pandas
...ng']].apply(tuple, axis=1) in 14.2 s for 900k rows. The ratio is more than 100.
– Pengju Zhao
Aug 2 '17 at 4:21
...
LoadRunner中参数化技术详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...able的数据文件：
l 在参数数据显示区中，最多只显示前100条数据，之后的不显示，但不影响正常取数据。
l 在记事本中编辑参数数据时，数据文件一定要以一个空行结束，否则，最后一行输入的数据不会被参数所使用。
对...
Does Entity Framework Code First support stored procedures?
...E GetBlogForAuthorName");
sb.AppendLine("@authorSearch varchar(100)");
sb.AppendLine("AS");
sb.AppendLine("BEGIN");
sb.AppendLine("-- SET NOCOUNT ON added to prevent extra result sets from interfering with SELECT statements.");
sb.AppendLin...
Create batches in linq
...l allocate space even for non-existent elements: Batch(new int[] { 1, 2 }, 1000000)
– Nick Whaley
Jul 12 '13 at 18:56
...
Breaking/exit nested for in vb.net
...
For i As Integer = 0 To 100
bool = False
For j As Integer = 0 To 100
If check condition Then
'if condition match
bool = True
Exit For 'Continue For
End If
Next
If bool = True Then C...
examining history of deleted file
...
If I have a repo with 100,000 commits, "lastrevisionthefileexisted" is not easy to find!
– Jon Watte
Jul 6 '16 at 19:55
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get all keys set in memcached
...b id, with a limit for the max number of keys to dump:
stats cachedump 3 100
ITEM views.decorators.cache.cache_header..cc7d9 [6 b; 1256056128 s]
END
stats cachedump 22 100
ITEM views.decorators.cache.cache_page..8427e [7736 b; 1256056128 s]
END
...
Equation (expression) parser with precedence?
...s been reorganized. The whole parser is under 5k of Javascript code (about 100 lines for the parser, 15 lines for a wrapper function) including error reporting, and comments.
You can find a live demo at http://users.telenet.be/bartl/expressionParser/expressionParser.html.
// operator table
var ops...
Is MATLAB OOP slow or am I doing something wrong?
...t; call_nops
Computer: PCWIN Release: 2009b
Calling each function/method 100000 times
nop() function: 0.02261 sec 0.23 usec per call
nop1-5() functions: 0.02182 sec 0.22 usec per call
nop() subfunction: 0.02244 sec 0.22 usec per call
@()[] anonymous f...
VR硬件行业洗牌进行时 70%创业公司倒闭转行做内容 - 资讯 - 清泛网 - 专注C...
...，很难说会不会花几千元买一个头显，但是如果成本不到100元，那么用户群体可能就会大不一样。”娄池表示。
设备售价昂贵，是制约行业发展的主要原因之一。扎克伯格曾表示，对主流消费者来说，600美元的虚拟现实头盔Ocul...