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Is MATLAB OOP slow or am I doing something wrong?
I'm experimenting with MATLAB OOP , as a start I mimicked my C++'s Logger classes and I'm putting all my string helper functions in a String class, thinking it would be great to be able to do things like a + b , a == b , a.find( b ) instead
of strcat( a b ) , strcmp( a, b ) , retrieve first...
Fast permutation -> number -> permutation mapping algorithms
I have n elements. For the sake of an example, let's say, 7 elements, 1234567. I know there are 7! = 5040 permutations possible of these 7 elements.
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CSS Background Opacity [duplicate]
I am using something similar to the following code:
8 Answers
8
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initialize a numpy array
Is there way to initialize a numpy array of a shape and add to it? I will explain what I need with a list example. If I want to create a list of objects generated in a loop, I can do:
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Determine the data types of a data frame's columns
I'm using R and have loaded data into a dataframe using read.csv() . How do I determine the data type of each column in the data frame?
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Define a lambda expression that raises an Exception
How can I write a lambda expression that's equivalent to:
6 Answers
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Converting numpy dtypes to native python types
If I have a numpy dtype, how do I automatically convert it to its closest python data type? For example,
12 Answers
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How to check if a number is a power of 2
Today I needed a simple algorithm for checking if a number is a power of 2.
25 Answers
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Easy pretty printing of floats in python?
I have a list of floats. If I simply print it, it shows up like this:
18 Answers
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tinyxml XML解析库下载（tinyxml2.h 和 tinyxml2.cpp） - 源码下载 - 清泛...
...C++ 读写xml方法整理（持续更新）》
tinyxml2.h
/*
Original code by Lee Thomason (www.grinninglizard.com)
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any
damages arising from the use of this softwar...