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Principal component analysis in Python
I'd like to use principal component analysis (PCA) for dimensionality reduction. Does numpy or scipy already have it, or do I have to roll my own using numpy.linalg.eigh ?
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Kiosk mode in Android
I'm in the process of evaluating if and how a CF .NET enterprise application can be ported to run on Android devices. The application on Windows Mobile phones are run in kiosk mode where the application autostart in fullscreen-mode after booting and with the users unable to accidentally or willingly...
Always pass weak reference of self into block in ARC?
I am a little confused about block usage in Objective-C. I currently use ARC and I have quite a lot of blocks in my app, currently always referring to self instead of its weak reference. May that be the cause of these blocks retaining self and keeping it from being dealloced ? The question is, s...
How do I measure execution time of a command on the Windows command line?
Is there a built-in way to measure execution time of a command on the Windows command line?
30 Answers
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Pure virtual function with implementation
My basic understanding is that there is no implementation for a pure virtual function, however, I was told there might be implementation for pure virtual function.
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In java how to get substring from a string till a character c?
I have a string (which is basically a file name following a naming convention) abc.def.ghi
9 Answers
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How to make vim paste from (and copy to) system's clipboard?
Unlike other editors, vim stores copied text in its own clipboard. So, it's very hard for me to copy some text from a webpage and paste it into the current working file. It so happens I have to either open gedit or type it manually.
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Medium-size Clojure sample application?
Is there a medium-sized Clojure sample application that could be used as a "best-practices" example, and a good way to see what such an application would look like in terms of code and code organization? A web application would be particularly interesting to me, but most important is that the progra...
How to set background color of an Activity to white programmatically?
How can I set the background color of an Activity to white programatically?
11 Answers
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Replace comma with newline in sed on MacOS?
I have a file of id's that are comma separated. I'm trying to replace the commas with a new line. I've tried:
13 Answers
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