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

...NaT you won't need to specify the dtype) In [24]: s = Series([Timestamp('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 ...
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How to disable margin-collapsing?

...like a specific choice, not a random browser trickery number, I'd prefer 0.01px. – Volker E. Jun 2 at 1:39 add a comment  |  ...
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Making 'git log' ignore changes for certain paths

... It is implemented now (git 1.9/2.0, Q1 2014) with the introduction pathspec magic :(exclude) and its short form :! in commit ef79b1f and commit 1649612, by Nguyễn Thái Ngọc Duy (pclouds), documentation can be found here. You now can log everything except a sub...
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UIActivityViewController crashing on iOS 8 iPads

...view. – Mason Cloud Sep 24 '14 at 5:01 3 @Thanks mmccomb,i have applied your code above it works ...
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Clearing purchases from iOS in-app purchase sandbox for a test user

...d a "plus" string to the email to create aliases for an address: so tester+01@gmail.com and tester+02@gmail.com both really just go to tester@gmail.com. Probably other email hosts do the same. When you create a test account you need to introduce: first name, last name, email address, password, secre...
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Amazon S3 CORS (Cross-Origin Resource Sharing) and Firefox cross-domain font loading

... Update September 10, 2014: You shouldn't need to do any of the query string hacks below anymore since Cloudfront properly supports CORS now. See http://aws.amazon.com/blogs/aws/enhanced-cloudfront-customization/ and this answer for more info: htt...
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Need to log asp.net webapi 2 request and response body to a database

... answered May 14 '14 at 17:01 SoftwareFactorSoftwareFactor 7,58433 gold badges2323 silver badges3131 bronze badges ...
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Converting string into datetime

...>> import timestring >>> timestring.Date('monday, aug 15th 2015 at 8:40 pm') <timestring.Date 2015-08-15 20:40:00 4491909392> >>> timestring.Date('monday, aug 15th 2015 at 8:40 pm').date datetime.datetime(2015, 8, 15, 20, 40) >>> timestring.Range('next week') &...
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How to colorize diff on the command line?

...al tool – amanzoor Aug 12 '19 at 10:01  |  show 9 more comments ...
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Computed / calculated / virtual / derived columns in PostgreSQL

... | edited Oct 6 '16 at 14:01 answered Dec 13 '15 at 20:06 E...