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Pip install Matplotlib error with virtualenv

...e, as well) which isn't a python library, so pip doesn't handle installing it (or freetype). You'll need to install something along the lines of libpng-devel and freetype-devel (or whatever the equivalent is for your OS). See the building requirements/instructions for matplotlib. ...
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Bootstrap 3 Flush footer to bottom. not fixed

I am using Bootstrap 3 for a site I am designing. 13 Answers 13 ...
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“icon-bar” in twitter bootstrap navigation bar

... on narrow browser screens. You can resize your browser window (by making it narrow) to see how the navbar is replaced by that button. The three span tags create three horizontal lines that look like a button, commonly known as the "burger" icon. Take a look at icon-bar in bootstrap.css: .navbar-...
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Why is XOR the default way to combine hashes?

... Assuming uniformly random (1-bit) inputs, the AND function output probability distribution is 75% 0 and 25% 1. Conversely, OR is 25% 0 and 75% 1. The XOR function is 50% 0 and 50% 1, therefore it is good for combining uniform probability distributions. ...
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execJs: 'Could not find a JavaScript runtime' but execjs AND therubyracer are in Gemfile

... Ubuntu Users: I had the same problem and I fixed it by installing nodejson my system independent of the gem. on ubuntu its: sudo apt-get install nodejs I'm using 64bit ubuntu 11.10 update: From @Galina 's answer below I'm guessing that the latest version of nodejs is re...
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Using column alias in WHERE clause of MySQL query produces an error

...follow | edited Sep 25 '18 at 18:06 Madhur Bhaiya 25.4k1010 gold badges3737 silver badges5151 bronze badges ...
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How to check if a string is a valid JSON string in JavaScript without using Try/Catch

...rst. The question was about not using try/catch. If you do not mind to use it, read the answer below. Here we just check a JSON string using a regexp, and it will work in most cases, not all cases. Have a look around the line 450 in https://github.com/douglascrockford/JSON-js/blob/master/json2.js ...
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How to namespace Twitter Bootstrap so styles don't conflict

I want to use Twitter Bootstrap, but only on specific elements, so I need to figure out a way to prefix all Twitter Bootstrap classes with my prefix, or use the less mixins. I'm not experienced with this yet so I don't quite understand how to do this. Here's an example of the HTML that I'm trying to...
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Table row and column number in jQuery

...ction in a given context, for example you can check the index of the TD in it's parent TR to get the column number, and you can check the TR index on the Table, to get the row number: $('td').click(function(){ var col = $(this).parent().children().index($(this)); var row = $(this).parent().pare...
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Add custom icons to font awesome

I love the Font Awesome icon font and want to use it for most of the icons on my site but there are a few custom svg icons that I'd need in addition to what's offered. ...