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Rename a git submodule
Is there some easy way to rename a git submodule directory (other than going through the entire motion of deleting it and re-adding it with a new destination name).
...
Add Keypair to existing EC2 instance
...very, if it's an EBS boot AMI, you can stop it, make a snapshot of the volume. Create a new volume based on it. And be able to use it back to start the old instance, create a new image, or recover data.
Though data at ephemeral storage will be lost.
Due to the popularity of this question and an...
Extension methods must be defined in a non-generic static class
...Helper
Following points need to be considered when creating an extension method:
The class which defines an extension method must be non-generic, static and non-nested
Every extension method must be a static method
The first parameter of the extension method should use the this keyword.
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Multiple github accounts on the same computer?
...epositories have the user settings overridden accordingly:
Setting user name, email and GitHub token – Overriding settings for individual repos
https://help.github.com/articles/setting-your-commit-email-address-in-git/
Hope this helps.
Note:
Some of you may require different emails to be used f...
Specifying and saving a figure with exact size in pixels
...(800/my_dpi, 800/my_dpi), dpi=my_dpi)
So you basically just divide the dimensions in inches by your DPI.
If you want to save a figure of a specific size, then it is a different matter. Screen DPIs are not so important anymore (unless you ask for a figure that won't fit in the screen). Using the ...
List comprehension vs map
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map may be microscopically faster in some cases (when you're NOT making a lambda for the purpose, but using the same function in map and a listcomp). List comprehensions may be faster in other cases and most (not all) pythonistas consider them more direct and clea...
What's the best way to develop a sideswipe menu like the one in Facebook's new iOS app?
It appears that side-swipe menus are becoming a more common interface element as more information gets crammed into each iPhone app. Facebook has included it in their latest version and the new Gmail app appears to include it as well . I was wondering if anybody had thoughts on the most efficient...
How can I parse a JSON file with PHP? [duplicate]
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To iterate over a multidimensional array, you can use RecursiveArrayIterator
$jsonIterator = new RecursiveIteratorIterator(
new RecursiveArrayIterator(json_decode($json, TRUE)),
RecursiveIteratorIterator::SELF_FIRST);
foreach ($jsonIterator...
How can I visualize per-character differences in a unified diff file?
...eated with git format-patch . The file is basically a unified diff with some metadata. If I open the file in Vim, I can see which lines have been modified, but I cannot see which characters in the changed lines differ. Does anyone know a way (in Vim, or some other free software that runs on Ubunt...
How to debug in Django, the good way? [closed]
So, I started learning to code in Python and later Django . The first times it was hard looking at tracebacks and actually figure out what I did wrong and where the syntax error was. Some time has passed now and some way along the way, I guess I got a routine in debugging my Django code. As this ...