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TLSF源码及算法介绍 - 开源 & Github - 清泛网 - 专注C/C++及内核技术

...及时。英文好的同学请直接看论文《TLSF: a New Dynamic Memory Allocator f 官网地址:http://www.gii.upv.es/tlsf/ 官网的代码应该是主分支,github上的几个仓库更新不是那么及时。 英文好的同学请直接看论文《TLSF: a New Dynamic Memory Allocator fo...
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Will the base class constructor be automatically called?

... age of customer be 2? It seems like the base class's constructor will be called no matter what. If so, why do we need to call base at the end sometimes? ...
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How to shuffle a std::vector?

...n Coliru Make sure to reuse the same instance of rng throughout multiple calls to std::shuffle if you intend to generate different permutations every time! Moreover, if you want your program to create different sequences of shuffles each time it is run, you can seed the constructor of the random e...
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string sanitizer for filename

...a whitelist of characters you are happy to be used? For example, you could allow just good ol' a-z, 0-9, _, and a single instance of a period (.). That's obviously more limiting than most filesystems, but should keep you safe. ...
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Complete Working Sample of the Gmail Three-Fragment Animation Scenario?

...at I'll refer to as "the Gmail three-fragment animation" scenario. Specifically, we want to start with two fragments, like this: ...
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Fastest way to get the first object from a queryset in django?

...eturn None if there aren't any. There are lots of ways to do this which all work. But I'm wondering which is the most performant. ...
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Elegant ways to support equivalence (“equality”) in Python classes

When writing custom classes it is often important to allow equivalence by means of the == and != operators. In Python, this is made possible by implementing the __eq__ and __ne__ special methods, respectively. The easiest way I've found to do this is the following method: ...
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Principal component analysis in Python

... Months later, here's a small class PCA, and a picture: #!/usr/bin/env python """ a small class for Principal Component Analysis Usage: p = PCA( A, fraction=0.90 ) In: A: an array of e.g. 1000 observations x 20 variables, 1000 rows x 20 colum...
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Django: How to completely uninstall a Django app?

What is the procedure for completely uninstalling a Django app, complete with database removal? 5 Answers ...
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Determining Referer in PHP

...s the most reliable and secure way to determine what page either sent, or called (via AJAX), the current page. I don't want to use the $_SERVER['HTTP_REFERER'] , because of the (lack of) reliability, and I need the page being called to only come from requests originating on my site. Edit: I am...