大约有 15,000 项符合查询结果(耗时:0.0333秒) [XML]

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Run an OLS regression with Pandas Data Frame

I have a pandas data frame and I would like to able to predict the values of column A from the values in columns B and C. Here is a toy example: ...
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onActivityResult() & onResume() [duplicate]

Could someone tell me which gets called first, is it onActivityResult() or is it onResume() ? Example: 3 Answers ...
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How to serialize a lambda?

How can I elegantly serialize a lambda? 5 Answers 5 ...
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Regular expression: find spaces (tabs/space) but not newlines

How can I have a regular expression that tests for spaces or tabs but not newlines. I tried \s but found out that it tests for newlines too. ...
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How to sleep for five seconds in a batch file/cmd [duplicate]

Windows's Snipping tool can capture the screen, but sometimes I want to capture the screen after five seconds, such as taking an image being displayed by the webcam. (Run the script and smile at the camera, for example.) ...
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海量数据相似度计算之simhash短文本查找 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...大小,就以JAVA 来说,存储一个simhash 需要一个原生态 lang 类型是64位 = 8 byte,如果是 Object 对象还需要额外的 8 byte,所以我们尽量节约空间使用原生态的lang类型。假设增长到最大的5000w数据, 5000w * 8byte = 400000000byte = 400000000/( 102...
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Retrieve column names from java.sql.ResultSet

With java.sql.ResultSet is there a way to get a column's name as a String by using the column's index? I had a look through the API doc but I can't find anything. ...
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How to concatenate two IEnumerable into a new IEnumerable?

I have two instances of IEnumerable<T> (with the same T ). I want a new instance of IEnumerable<T> which is the concatenation of both. ...
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Python add item to the tuple

I have some object.ID-s which I try to store in the user session as tuple. When I add first one it works but tuple looks like (u'2',) but when I try to add new one using mytuple = mytuple + new.id got error can only concatenate tuple (not "unicode") to tuple . ...
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Move the most recent commit(s) to a new branch with Git

I'd like to move the last several commits I've committed to master to a new branch and take master back to before those commits were made. Unfortunately, my Git-fu is not strong enough yet, any help? ...