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Python setup.py develop vs install
...stall (typically third party) packages that you're not going to develop/modify/debug yourself.
For your own stuff, you want to first install your package and then be able to frequently edit the code without having to re-install the package every time — and that is exactly what python setup.py dev...
Applying function with multiple arguments to create a new pandas column
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This is a useful solution. If the size of input arguments to the function x and y are not equal, you get an error. In that case, the @RomanPekar solution works without any problem. I didn't compare the performance.
– Ehsan Sadr
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What does `void 0` mean? [duplicate]
...ndefined
What's the point of that?
It seems pretty useless, doesn't it? If it always returns undefined, what's wrong with just using undefined itself?
In a perfect world we would be able to safely just use undefined: it's much simpler and easier to understand than void 0. But in case you've neve...
Operation on every pair of element in a list
...tions as well, permutations() and combinations(). To illustrate how they differ:
product() generates every possible pairing of elements, including all duplicates:
1,1 1,2 1,3 1,4
2,1 2,2 2,3 2,4
3,1 3,2 3,3 3,4
4,1 4,2 4,3 4,4
permutations() generates all unique orderings of each un...
How to get default gateway in Mac OSX
...n Time Warner's modem decided it wanted the IP my router used to have, and ifconfig lied about the gateway.
– Chris Doggett
Jun 20 '13 at 3:05
add a comment
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Reasons that the passed Intent would be NULL in onStartCommand
...incoming flags. I'm going to monitor this in the logs with the following:
if (null == intent || null == intent.getAction ()) {
String source = null == intent ? "intent" : "action";
Log.e (TAG, source + " was null, flags=" + flags + " bits=" + Integer.toBinaryString (flags));
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How do I view 'git diff' output with my preferred diff tool/ viewer?
When I type git diff , I want to view the output with my visual diff tool of choice (SourceGear "diffmerge" on Windows). How do I configure git to do this?
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What are the Web.Debug.config and Web.Release.Config files for?
...onfig has two additional files attached to it? Are these files used to specify debug and release specific settings, so you don't clutter up the main Web.config?
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std::shared_ptr thread safety explained
...one thread will call the delete operator on a shared object. I am not sure if it specifically specifies the last thread that deletes its copy of the shared pointer will be the one that calls delete (likely in practice this would be the case).
No they do not, the object stored in it can be simultane...
Saving images in Python at a very high quality
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If you are using matplotlib and trying to get good figures in a latex document, save as an eps. Specifically, try something like this after running the commands to plot the image:
plt.savefig('destination_path.eps', format='...