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Python Pandas: Get index of rows which column matches certain value

... frame (whose data may be gibabytes). What about dftest? Doesn't this also allocate a very large intermediate object where the returned index may be very small, or even empty. Are these magically optimized away using lazy views. If not then surely there must be an efficient way. ...
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Close iOS Keyboard by touching anywhere using Swift

I have been looking all over for this but I can't seem to find it. I know how to dismiss the keyboard using Objective-C but I have no idea how to do that using Swift ? Does anyone know? ...
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Pythonic way to check if a list is sorted or not

... Actually we are not giving the answer anijhaw is looking for. Here is the one liner: all(l[i] <= l[i+1] for i in xrange(len(l)-1)) For Python 3: all(l[i] <= l[i+1] for i in range(len(l)-1)) ...
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Compiling problems: cannot find crt1.o

... that's 64bit. You need the 32bit support files. For that, you need to install them sudo apt install gcc-multilib share | improve this answer | follow | ...
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git: How to ignore all present untracked files?

Is there a handy way to ignore all untracked files and folders in a git repository? (I know about the .gitignore .) 8 An...
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sphinx-build fail - autodoc can't import/find module

...can use the Makefile created by Sphinx to create your documentation. Just call make to see the options. If something went wrong before try: make clean before running make html. share | improv...
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PHP check whether property exists in object or class

... edited Mar 15 at 15:51 Abel Callejo 9,05577 gold badges4444 silver badges6262 bronze badges answered Jan 19 '13 at 12:32 ...
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How do I set a cookie on HttpClient's HttpRequestMessage

...instantiated once and re-used throughout the life of an application. Especially in server applications, creating a new HttpClient instance for every request will exhaust the number of sockets available under heavy loads..." From here: asp.net/web-api/overview/advanced/… – Ser...
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libpng warning: iCCP: known incorrect sRGB profile

...geMagick's convert in.png out.png To remove the invalid iCCP chunk from all of the PNG files in a folder (directory), you can use mogrify from ImageMagick: mogrify *.png This requires that your ImageMagick was built with libpng16. You can easily check it by running: convert -list format | gre...
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Opening Vim help in a vertical split window

... when I run :help ____ it always opens like that? – Tallboy May 7 '12 at 20:37 13 @Tallboy Try cn...