大约有 42,000 项符合查询结果(耗时:0.0398秒) [XML]

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Renaming columns in pandas

I have a DataFrame using pandas and column labels that I need to edit to replace the original column labels. 27 Answers ...
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Regular expression for a hexadecimal number?

How do I create a regular expression that detects hexadecimal numbers in a text? 11 Answers ...
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Java's Interface and Haskell's type class: differences and similarities?

While I am learning Haskell, I noticed its type class , which is supposed to be a great invention that originated from Haskell. ...
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Why can't I forward-declare a class in a namespace using double colons?

Why do I have to do this?: 5 Answers 5 ...
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Why do people say that Ruby is slow? [closed]

I like Ruby on Rails and I use it for all my web development projects. A few years ago there was a lot of talk about Rails being a memory hog and about how it didn't scale very well but these suggestions were put to bed by Gregg Pollack here. ...
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.NET obfuscation tools/strategy [closed]

My product has several components: ASP.NET, Windows Forms App and Windows Service. 95% or so of the code is written in VB.NET. ...
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Firing a double click event from a WPF ListView item using MVVM

In a WPF application using MVVM, I have a usercontrol with a listview item. In run time, it will use databinding to fill the listview with a collection of objects. ...
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When should I use Write-Error vs. Throw? Terminating vs. non-terminating errors

Looking at a Get-WebFile script over on PoshCode, http://poshcode.org/3226 , I noticed this strange-to-me contraption: 6 A...
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Getting a map() to return a list in Python 3.x

I'm trying to map a list into hex, and then use the list elsewhere. In python 2.6, this was easy: 9 Answers ...
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How do you remove duplicates from a list whilst preserving order?

Is there a built-in that removes duplicates from list in Python, whilst preserving order? I know that I can use a set to remove duplicates, but that destroys the original order. I also know that I can roll my own like this: ...