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Ubuntu running `pip install` gives error 'The following required packages can not be built: * freety
...all -r requirements.txt , I get the following error during the stage where it is installing matplotlib :
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What is function overloading and overriding in php?
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edited Jul 14 '14 at 13:15
rightfold
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Easiest way to toggle 2 classes in jQuery
If I have class .A and class .B and want to switch in between on button click, what's a nice solution for that in jQuery? I still don't understand how toggleClass() works.
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Perform commands over ssh with Python
I'm writing a script to automate some command line commands in Python. At the moment I'm doing calls thus:
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How do I convert a pandas Series or index to a Numpy array? [duplicate]
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edited Nov 13 '19 at 21:13
Mr_and_Mrs_D
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How to enable C++11 in Qt Creator?
The title is pretty self-descriptive. I've downloaded Qt Creator 2.7.0, and I am trying to compile some basic C++11 code:
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Understanding FFT output
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You should neither look for the real or imaginative part of a complex number (that what's your real and imaginary array is). Instead you want to look for the magnitude of the frequency which is defined as sqrt (real * real + imag * imag)....
How to do case insensitive search in Vim
...opyright or /copyright\c or even /copyri\cght
To do the inverse (case sensitive matching), use \C (capital C) instead.
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php: determine where function was called from
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That definitely does what you want. But beware debug_backtrace() is an expensive call. Don't get in the habit of using it to determine call-chains. If you want to "protect" those functions, check out OOP and protected methods.
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java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
I'm using the support library for my app. In my FragmentActivity I'm using an AsyncTask for downloading data from internet. In the onPreExecute() method I add a Fragment and in the onPostExecute() method I remove it again. When the orientation is changed in between, I get the above mentioned excepti...