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Why does the C preprocessor interpret the word “linux” as the constant “1”?
Why does the C preprocessor in GCC interpret the word linux (small letters) as the constant 1 ?
5 Answers
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Verifying signed git commits?
..., commit aeff29d, commit ca194d5, commit 434060e, commit 8e98e5f, commit a4cc18f, commit d66aeff (21 Jun 2015) by brian m. carlson (bk2204).
(Merged by Junio C Hamano -- gitster -- in commit ba12cb2, 03 Aug 2015)
verify-tag/verify-commit: add option to print raw gpg status information
ver...
Efficient Algorithm for Bit Reversal (from MSB->LSB to LSB->MSB) in C
...aa) >> 1) | ((x & 0x55555555) << 1));
x = (((x & 0xcccccccc) >> 2) | ((x & 0x33333333) << 2));
x = (((x & 0xf0f0f0f0) >> 4) | ((x & 0x0f0f0f0f) << 4));
x = (((x & 0xff00ff00) >> 8) | ((x & 0x00ff00ff) << 8));
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What characters can be used for up/down triangle (arrow without stem) for display in HTML?
...istent cross-browser and look better in Windows than the triangles in the accepted answer.
– Will Koehler
Jul 21 '14 at 21:36
9
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How to write a scalable Tcp/Ip based server
... am in the design phase of writing a new Windows Service application that accepts TCP/IP connections for long running connections (i.e. this is not like HTTP where there are many short connections, but rather a client connects and stays connected for hours or days or even weeks).
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Python base64 data decode
...C\x96\x07\xeeD\x8b\x8flC\x96\x07\xffD\x03\xd4\xaaC\x96\x08\x11B\x05&\xdcC\x96\x08#\x00\x00\x00\x00C\x96\x085C\x0c\xc9\xb7C\x96\x08GCy\xc0\xebC\x96\x08YC\x81\xa4xC\x96\x08kC\x0f@\x9bC\x96\x08}\x00\x00\x00\x00C\x96\x08\x8e\x00\x00\x00\x00C\x96\x08\xa0\x00\x00\x00\x00C\x96\x08\xb2\x00\x00\x00\x00C\...
TLSF源码及算法介绍 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...ead_mutex_unlock(l)
#endif
测试代码如下：
/*
* benchmark.cc
*
* Created on: Aug 19, 2021
* Author: root
*/
#include "utility/TestCommand.h"
#include "tlsf.h"
#include <benchmark/benchmark.h>
void std_test() {
void* p = malloc(1024);
*(int*)p = 2134;
free...
Why does modern Perl avoid UTF-8 by default?
...latin,greek or some such. See uninames and tcgrep.
You almost always need access to the functions from the standard Unicode::Normalize module various types of decompositions. export PERL5OPTS=-MUnicode::Normalize=NFD,NFKD,NFC,NFKD, and then always run incoming stuff through NFD and outbound stuff f...
【精心整理】【实用】visual C++中最常用的类与API函数 - C/C++ - 清泛网 -...
...钮控件的功能
CByteArray类：该类支持动态的字节数组
CCmdUI类：该类仅用于ON_UPDATE_COMMAND_UI处理函数中
CColorDialog类：封装标准颜色对话框
CDC类：定义设备环境对象类
CDialog类：所有对话框（模态或非模态）的基类
CDocument...
How does this giant regex work?
...be compromised further.
This is what the backdoor looks like when it is accessed:
the hex part of the code:
\x65\x76\x61\x6C\x28\x67\x7A\x69\x6E\x66\x6C\x61\x74\x65\x28\x62\x61\x73\x65\x36\x34\x5F\x64\x65\x63\x6F\x64\x65\x28
is acutally:
eval(gzinflate(base64_decode(
This is the code will p...