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MQTT物联网协议完全实践指南 · App Inventor 2 中文网

...建 Apps 首页 教育 中文教育本对比 App上架指南 入门必读 IoT专题 AI2拓展 Aia Store 关于 关于我们 发布日志 服务条款 ...
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How to make an OpenGL rendering context with transparent background?

...light1_dir[]={-1,1,1,0}; float const light1_color[]={255./255., 220./255., 97./255.,1}; float const light2_dir[]={0,-1,0,0}; float const light2_color[]={31./255., 75./255., 16./255.,1}; static void redrawTheWindow() { float const aspect = (float)width / (float)height; static float a=0; ...
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Excel RTD(Excel Real-Time Data)实时刷新数据技术 - C/C++ - 清泛网 - 专注C/C++及内核技术

...等等。至此,一个RTD Server的生命周期就结束了。 一 C#实例 来源:http://www.cnblogs.com/makemelaugh/archive/2008/11/06/1327960.html 创建一个项目ExcelRTD,添加Microsoft.Office.Interop.Excel引用。创建一个类MarketData.cs,这个类继承IRtdServer接口...
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Why does the C preprocessor interpret the word “linux” as the constant “1”?

..._ 65535 #define __ATOMIC_ACQUIRE 2 #define __FLT_MIN__ 1.17549435082228750797e-38F #define __UINT_LEAST8_TYPE__ unsigned char #define __INTMAX_C(c) c ## L #define __CHAR_BIT__ 8 #define __UINT8_MAX__ 255 #define __WINT_MAX__ 2147483647 #define __ORDER_LITTLE_ENDIAN__ 1234 #define __SIZE_MAX__ 184467...
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Why is a round-trip conversion via a string not safe for a double?

...ccccccccccccccd), /*2*/ I64(0xa3d70a3d70a3d70b), /*3*/ I64(0x83126e978d4fdf3c), /*4*/ I64(0xd1b71758e219652e), /*5*/ I64(0xa7c5ac471b478425), /*6*/ I64(0x8637bd05af6c69b7), /*7*/ I64(0xd6bf94d5e57a42be), /*8*/ I64(0xabcc77118461ceff), /*9*/ I64(0x89705f4136b4a599), ...
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Awk学习笔记 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...分别是Alfred Aho、Brian Kernighan、Peter Weinberger。gawk是awk的GNU本,它提供了Bell实验室和GNU的一些扩展。下面介绍的awk是以GUN的gawk为例的,在linux系统中已把awk链接到gawk,所以下面全部以awk进行介绍。 2. awk命令格式和选项 ...
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What is the difference between bottom-up and top-down?

... would call fib(100)=fib(99)+fib(98), which would call fib(99)=fib(98)+fib(97), ...etc..., which would call fib(2)=fib(1)+fib(0)=1+0=1. Then it would finally resolve fib(3)=fib(2)+fib(1), but it doesn't need to recalculate fib(2), because we cached it. This starts at the top of the tree and evaluate...
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内存管理内幕:动态分配的选择、折衷和实现 - C/C++ - 清泛网 - 专注C/C++及内核技术

...都获得了自己可以使用的地址空间,可以访问比您物理上安装的内存更多的内存。 在 32-位 x86 系统上,每一个进程可以访问 4 GB 内存。现在,大部分人的系统上并没有 4 GB 内存, 即使您将 swap 也算上, 每个进程所使用的内存...
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How does StartCoroutine / yield return pattern really work in Unity?

... 97 The first heading below is a straight answer to the question. The two headings after are more u...
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Linux反编译全攻略 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

... Ultimate Packer for eXecutables Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 UPX 1.25 Markus F.X.J. Oberhumer & Laszlo Molnar Jun 29th 2004 File size Ratio Format Name -------------------- ------ --------...