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Pandas dataframe get first row of each group

...6 4 second 7 4 fifth 8 5 first 9 6 first 10 6 second 11 7 fourth 12 7 fifth share | improve this answer | follow | ...
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How can I change the text inside my with jQuery?

... answered Aug 28 '11 at 16:31 dexterdexter 12.2k55 gold badges3434 silver badges5555 bronze badges ...
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argparse module How to add option without any argument?

... Community♦ 111 silver badge answered Mar 11 '11 at 10:25 jfsjfs 326k132132 gold badges817...
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jQuery’s .bind() vs. .on()

... AntonK 2,13011 gold badge1616 silver badges2424 bronze badges answered Aug 7 '12 at 13:29 jbabeyjbabey ...
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Trying to fire the onload event on script tag

... 11 that actually doesn't fix it. But if i just use document.body.appendChild(el) instead of $('body').append(el); then the onload event fires ...
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Switching to landscape mode in Android Emulator

... Try: ctrl+fn+F11 on Mac to change the landscape to portrait and vice versa. left-ctrl+F11on Windows 7. ctrl+F11on Linux. For Mac users, you only need to use the fn key if the setting "Use all F1, F2 etc. keys as function keys" (under ...
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How do you downgrade rubygems?

... Updated November 2011: Now that RVM's out, try running rvm install rubygems <version>. share | improve this answer | ...
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What does a tilde in angle brackets mean when creating a Java generic class?

... answered Feb 3 '11 at 15:12 openCageopenCage 2,48511 gold badge1515 silver badges2424 bronze badges ...
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HTML img scaling

... Volker E. 5,1821111 gold badges4141 silver badges6262 bronze badges answered Aug 28 '09 at 15:21 RiddlerDevRiddlerDe...
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JavaScript/regex: Remove text between parentheses

... 211 "Hello, this is Mike (example)".replace(/ *\([^)]*\) */g, ""); Result: "Hello, this is Mike"...