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What is the “FS”/“GS” register intended for?
...ritten code on 6809 (with and without paged memory), 6502, z80, 68k and 80[123]?86, my perspective is that segmented memory is a horror show and I'm glad it was consigned to the dustbin of history. The use of FS and GS for efficient access of thread_local data is a happy unintended consequence of an...
App Inventor 2 UrsPahoMqttClient 拓展 - 物联网轻量级MQTT协议 · App Inventor 2 中文网
...数据包被转换为以分号分隔的十进制数字字符串，例如“123；33；0；44”。在 AI2 应用程序中，您可以使用 String.Split 获取字节列表。
对于转换，我使用以下算法：
1) 用分号替换所有逗号
2) 用分号拆分字符串
3) 删除前导和尾随...
String formatting: % vs. .format vs. string literal
...Most people do not know that this is actually already defined in the Ansi C99 Std! Check out a recent copy of man sprintf and learn about the $ notation inside % placeholders
– cfi
Feb 20 '13 at 12:42
...
What does curly brackets in the `var { … } = …` statements do?
...h more succinct.
For example:
var ascii = {
a: 97,
b: 98,
c: 99
};
var {a, b, c} = ascii;
The above code is equivalent to:
var ascii = {
a: 97,
b: 98,
c: 99
};
var a = ascii.a;
var b = ascii.b;
var c = ascii.c;
Similarly for arrays:
var ascii = [97, 98, 99];
var [a...
Client-server synchronization pattern / algorithm?
... a user's name has changed then the delta can be something like {revision: 123, name: "John Doe"}
– dipole_moment
Jan 3 '17 at 17:23
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Get current folder path
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kmote
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answered Mar 27 '13 at 7:47
Thorsten DittmarThorst...
The Definitive C Book Guide and List
...chie (1988). Still a good, short but complete introduction to C (C90, not C99 or later versions), written by the inventor of C. However, the language has changed and good C style has developed in the last 25 years, and there are parts of the book that show its age.
C: A Reference Manual (5th Editi...
Why #define TRUE (1==1) in a C boolean macro instead of simply as 1?
...work nicely in the C++. foo(TRUE) will want the int overload.
Of course, C99 introduced bool, true, and false and these can be used in header files that work with C99 and with C.
However:
this practice of defining TRUE and FALSE as (0==0) and (1==0) predates C99.
there are still good reasons to ...
编译错误 error: ‘typeof’ cannot be used as a function - C/C++ - 清泛网 - 专注C/C++及内核技术
... cannot be used as a function。解决方法：修改C编译选项 -std=gnu99，使用GNU99 编译一些开源的C项目，发现typeof关键字不能被识别，报错： error: ‘typeof’ cannot be used as a function。
解决方法：修改C编译选项 -std=gnu99，使用GNU99编译...
Is it possible to run selenium (Firefox) web driver without a GUI?
... up Xvfb
#install Xvfb
sudo apt-get install xvfb
#set display number to :99
Xvfb :99 -ac &
export DISPLAY=:99
#you are now having an X display by Xvfb
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