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How should I use git diff for long lines?
..., thanks, that prevents all the unwanted content appearing, so the newline ones must have been colour related also.
– Peter Boughton
Oct 1 '08 at 18:13
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Split (explode) pandas dataframe string entry to separate rows
I have a pandas dataframe in which one column of text strings contains comma-separated values. I want to split each CSV field and create a new row per entry (assume that CSV are clean and need only be split on ','). For example, a should become b :
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Create a matrix of scatterplots (pairs() equivalent) in ggplot2
... be a factor. I haven't checked it, but there's no reason why it should be one. However I get a scatter plot :)
Note: For future reference, the plotmatrix() function has been replaced by the ggpairs() function from the GGally package as @naught101 suggests in another response below to this questi...
Is there an R function for finding the index of an element in a vector?
...ind the first index of an element in v that is equal to x . I know that one way to do this is: which(x == v)[[1]] , but that seems excessively inefficient. Is there a more direct way to do it?
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How do you use the ? : (conditional) operator in JavaScript?
Can someone please explain to me in simple words what is the ?: (conditional, "ternary") operator and how to use it?
18 ...
Use NUnit Assert.Throws method or ExpectedException attribute?
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The first allows you to test for more than one exception, with multiple calls:
Assert.Throws(()=>MethodThatThrows());
Assert.Throws(()=>Method2ThatThrows());
The second only allows you to test for one exception per test function.
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How to change the name of a Django app?
...lt;newAppName>_modelName. For mysql too I think it is the same (as mentioned by @null_radix)
(For Django >= 1.7) Update the django_migrations table to avoid having your previous migrations re-run: UPDATE django_migrations SET app='<NewAppName>' WHERE app='<OldAppName>'. Note: there...
Is it correct to use JavaScript Array.sort() method for shuffling?
... the algorithm, pick a random unshuffled element (which could be the first one) and swap it with the first unshuffled element - then treat it as shuffled (i.e. mentally move the partition to include it).
This is O(n) and only requires n-1 calls to the random number generator, which is nice. It also ...
What are the differences between the urllib, urllib2, urllib3 and requests module?
...k. But the requests package is so unbelievably useful and short that everyone should be using it.
First, it supports a fully restful API, and is as easy as:
import requests
resp = requests.get('http://www.mywebsite.com/user')
resp = requests.post('http://www.mywebsite.com/user')
resp = requests....
Detect Click into Iframe using JavaScript
... multiple iframes, as there is no event that fires when focus changes from one iframe to another (iframe's blur event doesn't fire).
– Tomáš Kafka
Feb 17 '16 at 15:43
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