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2015互联网结束补贴战 从相杀到相爱只需一个长假 - 资讯 - 清泛网 - 专注C/...
...王海霖认为，资本的游戏方式是一轮一轮的。“从天使轮开始，击鼓传花。但现在再也没有新的资本进场接盘了。”因此资本也会大力促进双方进行合并。合并能够达到对行业的绝对垄断，便于推高估值或市值，也能够给予一些...
How do I test if a string is empty in Objective-C?
...MENT CHARACTER) which behave likewise. You may get the latter when parsing PDF text.
– fzwo
Jan 8 '14 at 14:12
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Make .gitignore ignore everything except a few files
...I have a project (LaTeX) that generates lots of extra files (.auth,
.dvi, .pdf, logs, etc) as it runs, but I don't want those to be tracked.
...
GCC dump preprocessor defines
...liases" (see http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2258.pdf) you must add the -x c++ option to force the invocation of the C++ compiler (Credits for using the -x c++ options instead of an empty dummy file go to yuyichao, see below):
g++ -dM -E -x c++ /dev/null | fgrep __cpp_alias...
Elements order in a “for (… in …)” loop
...d collection of properties" (see http://www.mozilla.org/js/language/E262-3.pdf section 8.6).
It's not going to be standards conformant (i.e. safe) to assume all Javascript implementations will enumerate in declaration order.
...
Odd behavior when Java converts int to byte?
... grep harder. http://iiti.ac.in/people/~tanimad/JavaTheCompleteReference.pdf page 59
– eigenfield
Jan 6 at 14:05
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Download a file from NodeJS Server using Express
...// Or format the path using the `id` rest param
var fileName = "report.pdf"; // The default name the browser will use
res.download(filePath, fileName);
});
Read more about res.download()
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BLE（一）概述&工作流程&常见问题 - 创客硬件开发 - 清泛IT社区，...
...（常被）,类似于PC机网卡的MAC地址。两个蓝牙设备在通讯开始时通过询问的方式获取对方的DB_ADDR地址。
蓝牙的工作过程为：
蓝牙启动 -> 扫描设备 -> 设备配对(未配对的设备) -> 数据传输0x22 设备配对模式Numeric Comparison：...
NoSql vs Relational database
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To answer "why RDBMS cannot scale", please take a look at RDBMS Overheads pdf written by Stavros Harizopoulos,Daniel J. Abadi,Samuel Madden and Michael Stonebraker
RDBMS's have challenges in handling huge data volumes of Terabytes & Peta bytes. Even if you have Redundant Array of Independent/...
Learning Regular Expressions [closed]
..., interactive exercises.
Regular Expressions - Everything you should know (PDF Series)
Regex Syntax Summary
How Regexes Work
Footnote
†: The statement above that . matches any character is a simplification for pedagogical purposes that is not strictly true. Dot matches any character except newl...