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Numpy: Get random set of rows from 2D array

... >>> A = np.random.randint(5, size=(10,3)) >>> A array([[1, 3, 0], [3, 2, 0], [0, 2, 1], [1, 1, 4], [3, 2, 2], [0, 1, 0], [1, 3, 1], [0, 4, 1], [2, 4, 2], [3, 3, 1]])...
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jQuery trigger file input

...o i tried positioning it outside the viewport by setting position:absolute and top:-100px; and voilà it works. see http://jsfiddle.net/DSARd/1/ call it a hack. Hope that works for you. share | i...
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CSV in Python adding an extra carriage return, on Windows

...so be a blank string, same result. "wb" does not work in Python 3, strings and the buffer interface are incompatible. – CodeManX Jun 18 '15 at 20:57 ...
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Rounded corner for textview in android

I have a textview and want its corner to be in round shape. I already know it can be done using android:background="@drawable/somefile" . In my case, this tag is already included so cannot use again. e.g android:background="@drawable/mydialogbox" is already there to create image in background ...
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Stream.Seek(0, SeekOrigin.Begin) or Position = 0

... Use Position when setting an absolute position and Seek when setting a relative position. Both are provided for convenience so you can choose one that fits the style and readability of your code. Accessing Position requires the stream be seekable so they're safely interch...
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Display milliseconds in Excel

...rs which are timestamps in milliseconds (e.g. 28095200 is 7:48:15.200 am), and I want to make a new column next to it which keeps a running average and displays the time in a hh:mm:ss.000 format. ...
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Why is git push gerrit HEAD:refs/for/master used instead of git push origin master

I've just started using gerrit and I want to know why we need to do git push gerrit HEAD:refs/for/master instead of doing git push origin master ...
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Store password in TortoiseHg

...//username:password@hostname.com/repo. This is explained in Google Code's and Mercurial's FAQs. EDIT: Mercurial FAQ explains another way to do it: With Mercurial 1.3 you can also add an auth section to your hgrc file: [auth] example.prefix = https://hg.example.net/ example.username = foo exam...
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How to do a LIKE query in Arel and Rails?

...(users[:name].matches("%#{params[:user_name]}%")), I tried TRUNCATE users; and other such queries and nothing happened on the sql side. Looks safe to me. – earlonrails Aug 28 '13 at 18:56 ...
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Shortcut to open file in Vim

...ption of autofill. Invoke a keyboard shortcut, type the file name/pattern, and choose from all the matching files names. 19...