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Plotting a list of (x, y) coordinates in python matplotlib

I have a list of pairs (a, b) that I would like to plot with matplotlib in python as actual x-y coordinates. Currently, it is making two plots, where the index of the list gives the x-coordinate, and the first plot's y values are the a s in the pairs and the second plot's y values are the b s ...
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How do I “source” something in my .vimrc file?

I've been working on expanding my vim-foo lately and I've run across a couple of plugins ( autotag.vim for example) that require them to be "sourced" in my .vimrc file. What exactly does this mean and how do I do it? ...
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Which characters are valid/invalid in a JSON key name?

Are there any forbidden characters in key names, for JavaScript objects or JSON strings? Or characters that need to be escaped? ...
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jQuery Plugin: Adding Callback functionality

I'm trying to give my plugin callback functionality, and I'd like for it to operate in a somewhat traditional way: 6 Answer...
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What is the way to quick-switch between tabs in Xcode 4

I have opened many tabs while working on project. (new feature in Xcode 4). 5 Answers ...
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How to add a footer to a UITableView in Storyboard

I'm fairly new to iOS development. 3 Answers 3 ...
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COUNT DISTINCT with CONDITIONS

I want to count the number of distinct items in a column subject to a certain condition, for example if the table is like this: ...
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What exactly does the Access-Control-Allow-Credentials header do?

I'm trying to understand how to use CORS and am confused about what the Access-Control-Allow-Credentials header does. 1 A...
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How do I get the “id” after INSERT into MySQL database with Python?

I execute an INSERT INTO statement 5 Answers 5 ...
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Differences between git pull origin master & git pull origin/master

What is the difference between git pull origin master and git pull origin/master ? 3 Answers ...