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Binary Data in JSON String. Something better than Base64

... bytes as five characters. However, this is only a 7% improvement over base64, it's more expensive to compute, and implementations are less common than for base64 so it's probably not a win. You could also simply map every input byte to the corresponding character in U+0000-U+00FF, then do the mini...
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Multiple glibc libraries on a single host

...rogram: /path/to/newglibc/ld-linux.so.2 --library-path /path/tonewglibc/lib64:/path/to/newglibc/usr/lib64 /path/to/myapp – maximk Sep 14 '16 at 11:09 ...
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What are the calling conventions for UNIX & Linux system calls (and user-space functions) on i386 an

...int $0x80 http://www.int80h.org/bsdasm/#default-calling-convention x86-64 Linux System Call convention: x86-64 Mac OS X is similar but different. TODO: check what *BSD does. Refer to section: "A.2 AMD64 Linux Kernel Conventions" of System V Application Binary Interface AMD64 Architecture Proc...
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When to use NSInteger vs. int

... possible integer type, which on 32 bit systems is just an int, while on a 64-bit system it's a long. I'd stick with using NSInteger instead of int/long unless you specifically require them. NSInteger/NSUInteger are defined as *dynamic typedef*s to one of these types, and they are defined like th...
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Android. WebView and loadData

...3 and 4.0.3. In fact, I have no idea about what other values besides "base64" does the last parameter take. Some Google examples put null in there. share | improve this answer | ...
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boost::filesystem指南 - C/C++ - 清泛网 - 专注C/C++及内核技术

...今天开始写作boost库指南系列文章了,我个人比较熟的就这个filesystem库,当然要从这里先开始。这系列指南只对初学的一个快速指南,没...今天开始写作boost库指南系列文章了,我个人比较熟的就这个filesystem库,当然要从...
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Convert a float64 to an int in Go

How does one convert a float64 to an int in Go? I know the strconv package can be used to convert anything to or from a string, but not between data types where one isn't a string. I know I can use fmt.Sprintf to convert anything to a string, and then strconv it to the data type I need, but th...
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从源代码剖析Mahout推荐引擎 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

... 图片摘自Mahout in Action 从上图中我们可以看到,算法被模块化的,通过1,2,3,4的过程进行方法调用。 程序代码: public class UserCF { final static int NEIGHBORHOOD_NUM = 2; final static int RECOMMENDER_NUM = 3; public static void main...
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MFC 的SetWindowPos 用法 - C/C++ - 清泛网 - 专注C/C++及内核技术

MFC 的SetWindowPos 用法许多软件,特别占桌面面积不很大的软件,通常都提供了一个常居顶端的功能(可能有的软件不这么叫法,但作用相同的),它的作用保...许多软件,特别占桌面面积不很大的软件,通常都提...
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How can I test a Windows DLL file to determine if it is 32 bit or 64 bit? [duplicate]

...e following values IMAGE_FILE_MACHINE_I386 (0x014c) IMAGE_FILE_MACHINE_IA64 (0x0200) IMAGE_FILE_MACHINE_AMD64 (0x8664) This information should be at a fixed offset in the file, but I'd still recommend traversing the file and checking the signature of the MS-DOS header and the IMAGE_NT_HEADERS to...