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Efficiently checking if arbitrary object is NaN in Python / numpy / pandas?

...stamp('20130101'),np.nan,Timestamp('20130102 9:30')],dtype='M8[ns]') In [25]: s Out[25]: 0 2013-01-01 00:00:00 1 NaT 2 2013-01-02 09:30:00 dtype: datetime64[ns]`` In [26]: pd.isnull(s) Out[26]: 0 False 1 True 2 False dtype: bool ...
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Using querySelector with IDs that are numbers

From what I understand the HTML5 spec lets you use IDs that are numbers like this. 5 Answers ...
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WPF: ItemsControl with scrollbar (ScrollViewer)

... 265 To get a scrollbar for an ItemsControl, you can host it in a ScrollViewer like this: <Scroll...
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MVC3 DropDownListFor - a simple example?

... answered Aug 22 '11 at 5:52 Sergey GavrukSergey Gavruk 3,47722 gold badges1616 silver badges3030 bronze badges ...
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Using pickle.dump - TypeError: must be str, not bytes

... answered Dec 16 '12 at 23:56 Jon Clements♦Jon Clements 118k2828 gold badges213213 silver badges250250 bronze badges ...
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Convert list to tuple in Python

...able name. It's probably what's causing your problem. >>> l = [4,5,6] >>> tuple(l) (4, 5, 6) share | improve this answer | follow | ...
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What does it mean in shell when we put a command inside dollar sign and parentheses: $(command)

... answered Aug 1 '13 at 3:53 Eric UrbanEric Urban 3,22911 gold badge1616 silver badges2323 bronze badges ...
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Using Rails 3.1 assets pipeline to conditionally use certain css

I’m in the process of building my first solo Rails app using Rails 3.1.rc5. My problem is that I want to have my site render the various CSS files conditionally. I’m using Blueprint CSS and I’m trying to have sprockets/rails render screen.css most of the time, print.css only when printing,...
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Android:What is difference between setFlags and addFlags for intent

... Anoop M 7,23933 gold badges3636 silver badges5757 bronze badges answered Jul 12 '11 at 12:36 CristianCristian 188k5858 gold...
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How is set() implemented?

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