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How are Python's Built In Dictionaries Implemented?
...lt in dictionary type for python is implemented? My understanding is that it is some sort of hash table, but I haven't been able to find any sort of definitive answer.
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Multiprocessing: How to use Pool.map on a function defined in a class?
...functions pool.map could accept. I wrote the following to circumvent this. It appears to work, even for recursive use of parmap.
from multiprocessing import Process, Pipe
from itertools import izip
def spawn(f):
def fun(pipe, x):
pipe.send(f(x))
pipe.close()
return fun
def ...
Java “lambda expressions not supported at this language level”
...ct Structure → Module → app and In Properties Tab set Source Compatibility and Target Compatibility to 1.8 (Java 8)
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How to find out what type of a Mat object is with Mat::type() in OpenCV
I am kind of confused with type() method of Mat object in OpenCV. If I have following lines:
6 Answers
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fs: how do I locate a parent folder?
How do I write this to go back up the parent 2 levels to find a file?
11 Answers
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How to remove illegal characters from path and filenames?
...ath and file characters from a simple string. I've used the below code but it doesn't seem to do anything, what am I missing?
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how to draw smooth curve through N points using javascript HTML5 canvas?
..., I'm saving the mouse movement coordinates to an array then drawing them with lineTo. The resulting line is not smooth. How can I produce a single curve between all the gathered points?
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What is getattr() exactly and how do I use it?
...e getattr() function . The problem is that I still can't grasp the idea of its usage. The only thing I understand about getattr() is that getattr(li, "pop") is the same as calling li.pop .
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What's the difference between echo, print, and print_r in PHP?
...play strings. The differences are subtle: print has a return value of 1 so it can be used in expressions whereas echo has a void return type; echo can take multiple parameters, although such usage is rare; echo is slightly faster than print. (Personally, I always use echo, never print.)
var_dump pr...
How do I use PHP namespaces with autoload?
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use Person\Barnes\David as MyPerson;
$class = new MyPerson\Class1();
Edit (2009-12-14):
Just to clarify, my usage of "use ... as" was to simplify the example.
The alternative was the following:
$class = new Person\Barnes\David\Class1();
or
use Person\Barnes\David\Class1;
// ...
$class = ...