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“Least Astonishment” and the Mutable Default Argument
... flaw, and it is not because of internals, or performance.
It comes simply from the fact that functions in Python are first-class objects, and not only a piece of code.
As soon as you get to think into this way, then it completely makes sense: a function is an object being evaluated on its definiti...
Algorithms based on number base systems? [closed]
... the head of the data structure can be efficient.
Avoid cascading borrows (from taking the tail of the list) and carries (from consing onto the list) by segmenting the data structure
Here is also the reference list for that chapter:
Guibas, McCreight, Plass and Roberts: A new representation for ...
Does the use of the “Async” suffix in a method name depend on whether the 'async' modifier is used?
...
I think the truth is ambiguous even from Microsoft documentation:
In Visual Studio 2012 and the .NET Framework 4.5, any method that is
attributed with the async keyword (Async in Visual Basic) is
considered an asynchronous method, and the C# and Visual ...
What is Ruby's double-colon `::`?
... CONSTANT = 4
end
end
end
You could access CONSTANT from outside the module as SomeModule::InnerModule::MyClass::CONSTANT.
It doesn't affect instance methods defined on a class, since you access those with a different syntax (the dot .).
Relevant note: If you want to go back...
Android map v2 zoom to show all the markers
... and keep all markers in view? In the earlier version this can be achieved from zoomToSpan() but in v2 I have no idea how about doing that. Further, I know the radius of the circle that needs to be visible.
...
How to ignore user's time zone and force Date() use specific time zone
In an JS app, I receive timestamp (eq. 1270544790922 ) from server (Ajax).
7 Answers
...
Unit testing Anti-patterns catalogue
...st two key elements present to formally distinguish an actual anti-pattern from a simple bad habit, bad practice, or bad idea:
...
Encoding an image file with base64
...ethods).
That being said, you can use cStringIO to create such an object from a memory buffer:
import cStringIO
import PIL.Image
# assume data contains your decoded image
file_like = cStringIO.StringIO(data)
img = PIL.Image.open(file_like)
img.show()
...
Using global variables in a function
... to that function unless explicitly told otherwise. If it is only reading from a name, and the name doesn't exist locally, it will try to look up the name in any containing scopes (e.g. the module's global scope).
When you assign 42 to the name myGlobal, therefore, Python creates a local variable ...
Using logging in multiple modules
...program code
if __name__ == '__main__':
main()
See here for logging from multiple modules, and here for logging configuration for code which will be used as a library module by other code.
Update: When calling fileConfig(), you may want to specify disable_existing_loggers=False if you're usi...