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pytest: assert almost equal
How to do assert almost equal with py.test for floats without resorting to something like:
7 Answers
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Converting a list to a set changes element order
Recently I noticed that when I am converting a list to set the order of elements is changed and is sorted by character.
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Plotting two variables as lines using ggplot2 on the same graph
A very newbish question, but say I have data like this:
5 Answers
5
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Is jQuery “each()” function synchronous?
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Yes, the jQuery each method is synchronous. Nearly ALL JavaScript is synchronous. The only exceptions are AJAX, timers (setTimeout and setInterval), and HTML5 Web Workers.
Your problem is probably somewhere else in your code....
What is the difference between __init__ and __call__?
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The first is used to initialise newly created object, and receives arguments used to do that:
class Foo:
def __init__(self, a, b, c):
# ...
x = Foo(1, 2, 3) # __init__
The second implements function call operator.
class Foo:
def __call__(self,...
c++ boost::multi_index composite keys efficiency - c++1y / stl - 清泛IT社区，为创新赋能！
Long time reader first time poster! I'm playing around with the boost::multi_index container stuff and have a rather in-depth question that hopefully a boost or C++ container expert might know (my knowledge in C++ containers is pretty basic). For reference, the boost documentation on composite keys ...
Evenly distributing n points on a sphere
...t can give me positions around a sphere for N points (less than 20, probably) that vaguely spreads them out. There's no need for "perfection", but I just need it so none of them are bunched together.
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What is the difference between a 'closure' and a 'lambda'?
...and the basic concepts behind them but I often see them used interchangeably and I get confused.
11 Answers
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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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How to implement the factory method pattern in C++ correctly
... been making me feel uncomfortable for quite a long time, because I honestly don't know how to do it, even though it sounds simple:
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