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Sorting arrays in NumPy by column
...joa's method by using a stable sort like mergesort and sorting the indices from the least significant to the most significant columns:
a = a[a[:,2].argsort()] # First sort doesn't need to be stable.
a = a[a[:,1].argsort(kind='mergesort')]
a = a[a[:,0].argsort(kind='mergesort')]
This sorts by colu...
How to expire session due to inactivity in Django?
...ession is expired. something like this should handle the whole process...
from datetime import datetime
from django.http import HttpResponseRedirect
class SessionExpiredMiddleware:
def process_request(request):
last_activity = request.session['last_activity']
now = datetime.now...
Which types can be used for Java annotation members?
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What's missing from the above list is "Annotation". You can have an annotation which contains another annotation or an array of another annotation.
– Matt
Mar 16 '12 at 17:54
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What does “opt” mean (as in the “opt” directory)? Is it an abbreviation? [closed]
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I'd be curious how this differs from /usr/lib (which often contains optional software packages)
– Jonathan
Jun 21 '16 at 18:34
...
class
....instance_methods.include? :a #=> true
hi object inherits its #methods from its #singleton_class.instance_methods and then from its #class.instance_methods.
Here we gave hi's singleton class instance method :a. It could have been done with class << hi instead.
hi's #singleton_class has all...
Understanding the transclude option of directive definition?
...ing called transclusion. The concept is pretty simple: Include the content from one place into another. So now your directive will look something like this:
app.directive('myDirective', function(){
return{
transclude: true,
template: '<div class="something"> This is my dir...
What is the max size of localStorage values?
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Quoting from the Wikipedia article on Web Storage:
Web storage can be viewed simplistically as an improvement on cookies, providing much greater storage capacity (10 MB per origin in Google Chrome(https://plus.google.com/u/0/+Fra...
How can I format a decimal to always show 2 decimal places?
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I suppose you're probably using the Decimal() objects from the decimal module? (If you need exactly two digits of precision beyond the decimal point with arbitrarily large numbers, you definitely should be, and that's what your question's title suggests...)
If so, the Decimal FA...
Get the client's IP address in socket.io
...way to get the IP address of an incoming connection? I know you can get it from a standard HTTP connection, but socket.io is a bit of a different beast.
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How can I detect the encoding/codepage of a text file
In our application, we receive text files ( .txt , .csv , etc.) from diverse sources. When reading, these files sometimes contain garbage, because the files where created in a different/unknown codepage.
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