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Why doesn't Python have a sign function?
...didn't agree on what it should return in all the edge cases (+/-0, +/-nan, etc)
So they decided to implement only copysign, which (although more verbose) can be used to delegate to the end user the desired behavior for edge cases - which sometimes might require the call to cmp(x,0).
I don't know...
AngularJS: Basic example to use authentication in Single Page Application
...eartbeats for status checks, stores the session token in a cookie, events, etc.
You could either:
Modify the module and attach it to your own API, or
Use the module together with UserApp (a cloud-based user management API)
https://github.com/userapp-io/userapp-angular
If you use UserApp, you ...
What is the difference/usage of homebrew, macports or other package installation tools? [closed]
...local for Homebrew. Apple has left /usr/local for "executables, libraries, etc. not included by the basic operating system". That means it's possible that tools installed prior to using Homebrew may have created /usr/local such that it can't be modified without sudo. They don't discuss that at the w...
What is the difference between Class and Klass in ruby?
..., so you won't be able to have variables named def or module or if or end, etc - class is no different.
For example, consider the following:
def show_methods(class)
puts Object.const_get(class).methods.inspect
end
show_methods "Kernel"
Trying to run this results in an error, since you can't us...
What is the effect of encoding an image in base64?
...
Takeaway = There's some advantage to encoding and gzipping your UI icons, etc, but unwise to do this for larger images.
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How does Django's Meta class work?
...her the model is abstract or not, singular and plural versions of the name etc.
Short explanation is here: Django docs: Models: Meta options
List of available meta options is here: Django docs: Model Meta options
For latest version of Django: Django docs: Model Meta options
Metaclass in Python:
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How do I change the formatting of numbers on an axis with ggplot?
...are coming out with computer style exponent formatting, i.e. 4e+05, 5e+05, etc. This is obviously unacceptable, so I want to get it to display them as 500,000, 400,000, and so on. Getting a proper exponent notation would also be acceptable.
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opengl: glFlush() vs. glFinish()
...appropriate non-OpenGL APIs (e.g. reads from the framebuffer, screenshots, etc...). Whether that is really what happens is driver-dependent. The specification allows a ton of latitude as to what is legal.
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C# Events and Thread Safety
...to compare this with the cost of repainting parts of a screen in Winforms, etc., so it becomes even more invisible in the deluge of real CPU work and waiting around for resources. You get +1 from me for the hard work, anyway. :)
– Daniel Earwicker
May 11 '09 at...
Implicit type conversion rules in C++ operators
...at are the implicit type conversion rules in C++ when adding, multiplying, etc. For example,
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