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How do I combine two data frames?

...first dataframe df1 with the values of second dataframe df2. you can do it by following steps — Step 1: Set index of the first dataframe (df1) df1.set_index('id') Step 2: Set index of the second dataframe (df2) df2.set_index('id') and finally update the dataframe using the following snippet...
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scopes with lambda and arguments in Rails 4 style?

... Note that if you are using Ruby 1.9, the short lambda syntax does not allow a space between the arrow and a parameter (scope :find_lazy, ->(param)). In Ruby 2+, the space is allowed. More info here... – furman87 ...
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How to force a Solution file (SLN) to be opened in Visual Studio 2013?

... Note that you can also force the upgrade of a .sln or .proj file by using the commandline, where devenv is the target IDE version: devenv "MyProject.sln" /upgrade Example: "%programfiles(x86)%\Microsoft Visual Studio 12.0\Common7\IDE\devenv.exe" "D:\Source\MySolution.sln" /upgrade No...
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Vertical (rotated) label in Android

...), android.graphics.Region.Op.REPLACE); super.draw(canvas); } } By default, rotated text is from top to bottom. If you set android:gravity="bottom", then it's drawn from bottom to top. Technically, it fools underlying TextView to think that it's normal rotation (swapping width/height in ...
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Difference between repository and service?

... imageUploader: { brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454...
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It has a DefiningQuery but no InsertFunction element… err

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How to get the parents of a merge commit in git?

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MS-DOS Batch file pause with enter key

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Stop setInterval

... we can easily stop the set interval by calling clear interval var count = 0 , i = 5; var vary = function intervalFunc() { count++; console.log(count); console.log('hello boy'); if (count == 10) { clearInterval(this); } } setInter...
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Java regex email

... Just two counterexamples: webmaster@müller.de (valid and rejected by your example), matteo@78.47.122.114 (my email, valid and rejected by your example. – Matteo Nov 21 '11 at 5:58 ...