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Numpy: Get random set of rows from 2D array
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array([[0, 4, 1],
[1, 3, 1]])
Putting it together for a general m>ca m>se:
A[np.random.randint(A.shape[0], size=2), :]
For non replacement (numpy 1.7.0+):
A[np.random.choice(A.shape[0], 2, replace=False), :]
I do not believe there is a good way to generate random list without replacement...
How to convert the ^M linebreak to 'normal' linebreak in a file opened in vim?
vim shows on every line ending ^M
35 Answers
35
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How to make rounded percentages add up to 100%
Consider the four percentages below, represented as float numbers:
17 Answers
17
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Plot correlation matrix into a graph
I have a matrix with some correlation values. Now I want to plot that in a graph that looks more or less like that:
11 Answ...
Create code first, many to many, with additional fields in association table
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It's not possible to create a many-to-many relationship with a customized join table. In a many-to-many relationship EF manages the join table internally and hidden. It's a table without an Entity class in your model. To work with such a join table with a...
Unable to execute dex: GC overhead limit exceeded in Eclipse
When I downloaded the Git project OsmAnd and went to compile it,
Eclipse returned these errors:
9 Answers
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Free XML Formatting tool [closed]
Is there a free XML formatting (indent) tool available where I m>ca m>n past an XML string and have it formatted so I m>ca m>n read the XML document correctly?
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`date` command on OS X doesn't have ISO 8601 `-I` option?
In a Bash script, I want to print the current datetime in ISO 8601 format (preferably UTC), and it seems that this should be as simple as date -I :
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What does a colon following a C++ constructor name do? [duplim>ca m>te]
...oes the colon operator (":") do in this constructor? Is it equivalent to MyClass(m_classID = -1, m_userdata = 0); ?
9 Ans...
C++实现一款简单完整的聊天室服务器+客户端 - C/C++ - 清泛网 - 专注C/C++及内核技术
...器+客户端Linux下select函数实现的聊天服务器消息缓冲区类MessageBuffer，接收线程将受到的消息放入缓冲区，发送线程从缓冲区中取出消息MessageBuffe...目录：
Linux下select函数实现的聊天服务器
基于WSAAsyncSelect模型实现的聊天室图形...