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ZMQ: 基本原理 - 开源 & Github - 清泛网移动版 - 专注C/C++及内核技术
...可靠性保证。
ØMQ抽象了指定发送数据到特定网络位置这样需求。消息是被发送到拓扑的,而不是发送给特定的终端节点。重新调用哪个与特定商务逻辑紧密相连的拓扑意味着当你发送消息给拓扑的时候,你基本上已经请...
LINGO使用指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...INGO软件计算6个发点8个收点的最小费用运输问题。产销单位运价如下表。
销地
产地
B1
B2
B3
B4
B5
B6
B7
B8
产量
A1
6
2
6
7
4
...
C++STL容器使用经验总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...拷贝插到容器中去。如果按照容器的排列顺序,新元素的位置可能与被删除元素的位置相同或紧邻,则使用“提示”(hint)形式的insert,以便把插入的效率从对数时间提高到常数时间。把你从第1步得来的迭代器作为提示信息。
...
MFC学习总结 (90个技巧) dlg 上建立View - C/C++ - 清泛网 - 专注C++内核技术
...eft;
int height = rect.bottom - rect.top;
//调整属性页的大小和位置
m_tabsheet.SetWindowPos(NULL, 225, 225, width-82, height,SWP_NOACTIVATE);
//属性页的添加完成。如果要添加多个属性页,则只需要增加多个对象,如下:
m_tabsheet.AddPage(&m_skatch1);
m...
Regular expression that matches valid IPv6 addresses
...
254
I was unable to get @Factor Mystic's answer to work with POSIX regular expressions, so I wrote o...
How do I make a matrix from a list of vectors in R?
...
124
One option is to use do.call():
> do.call(rbind, a)
[,1] [,2] [,3] [,4] [,5] [,6]
[...
How to get row from R data.frame
...for example:
#Add your data
x <- structure(list(A = c(5, 3.5, 3.25, 4.25, 1.5 ),
B = c(4.25, 4, 4, 4.5, 4.5 ),
C = c(4.5, 2.5, 4, 2.25, 3 )
),
.Names = c("A", "B", "C"),
class = "data.f...
Concatenating two one-dimensional NumPy arrays
... explicit sequences).
– Jim K.
Aug 24 '16 at 20:43
@JimK. What would happen to the axis parameter?
...
What is the best regular expression to check if a string is a valid URL?
...
415
I wrote my URL (actually IRI, internationalized) pattern to comply with RFC 3987 (http://www.f...
Filter rows which contain a certain string
...
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