大约有 16,380 项符合查询结果(耗时:0.0377秒) [XML]

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What is the difference between NaN and None?

I am reading two columns of a csv file using pandas readcsv() and then assigning the values to a dictionary. The columns contain strings of numbers and letters. Occasionally there are cases where a cell is empty. In my opinion, the value read to that dictionary entry should be None but instead ...
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Can you break from a Groovy “each” closure?

Is it possible to break from a Groovy .each{Closure} , or should I be using a classic loop instead? 6 Answers ...
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What is the difference between Gemfile and Gemfile.lock in Ruby on Rails

I am a beginner to Ruby on Rails and I am using Rails 3.0.9. 3 Answers 3 ...
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Turn a simple socket into an SSL socket

I wrote simple C programs, which are using sockets ('client' and 'server'). (UNIX/Linux usage) 4 Answers ...
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Python : List of dict, if exists increment a dict value, if not append a new dict

I would like do something like that. 6 Answers 6 ...
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Flask-SQLalchemy update a row's information

How can I update a row's information? 5 Answers 5 ...
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Unit Test? Integration Test? Regression Test? Acceptance Test?

...en doing TDD or unit testing. Please if anyone can elaborate how, when to implement these? 6 Answers ...
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Splitting a list into N parts of approximately equal length

What is the best way to divide a list into roughly equal parts? For example, if the list has 7 elements and is split it into 2 parts, we want to get 3 elements in one part, and the other should have 4 elements. ...
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Why is not in HTML 5 Tag list while is?

Shouldn't both be removed? Or does it mean we should use <small> ? Why is <big> removed but <small> is not? What is the problem with <big> which does not apply to <small> ? ...
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Python Logging (function name, file name, line number) using a single file

I am trying to learn how an application works. And for this I am inserting debug commands as the first line of each function's body with the goal of logging the function's name as well as the line number (within the code) where I send a message to the log output. Finally, since this application comp...