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Which is faster: while(1) or while(2)?
...than while(2), for a human to read! If I see while(1) in an unfamiliar codebase, I immediately know what the author intended, and my eyeballs can continue to the next line.
If I see while(2), I'll probably halt in my tracks and try to figure out why the author didn't write while(1). Did the author'...
Android emulator shows nothing except black screen and adb devices shows “device offline”
...M driver does not support emulating a 64 bit system image on Intel systems based on Core microarchitecture (Core, Core2 Duo etc.). All systems based on Nehalem and beyond are supported. (Corei3, Core i5 and Core i7 machines).
I spent a day trying to figure this problem out when I came upon this qu...
Realistic usage of the C99 'restrict' keyword?
... "memset(p1,4,50); memset(p2,9,50);". Restrict is vastly superior to type-based aliasing; it's a shame compilers focus more on the latter.
– supercat
Mar 9 '16 at 0:14
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jsoncpp 不能处理__int64(long long)类型数据 - C/C++ - 清泛网 - 专注C/C++及内核技术
jsoncpp 不能处理__int64(long long)类型数据jsoncpp，是一个c++的解析和生成json的开源工具。如果你的c++程序需要解析或生成json，它会使这个过程变得很简单！但是，今天在用jsoncpp进...jsoncpp，是一个c++的解析和生成json的开源工具。如...
libunwind链接时报错：undefined reference to `_Ux86_64_init_local\' - ...
libunwind链接时报错：undefined reference to `_Ux86_64_init_local'编译安装libunwind后，代码编译链接时报错：undefined reference to `_Ux86_64_init_local& 39;，链接选项加了 -lunwind，仍然报错。原因：编译出来的libunwind拆分成了很多个 编译安装libunwi...
How is Perl's @INC constructed? (aka What are all the ways of affecting where Perl modules are searc
... don't forget PERLOPT, where you can set -I. Also, things such as base.pm and local::lib use the things you've listed implicitly.
– brian d foy
Mar 26 '10 at 21:30
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Unable to load config info from /usr/local/ssl/openssl.cnf on Windows
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Or C:\OpenSSL-Win64\bin\openssl.cfg in 64bits systems
– borjab
Nov 13 '14 at 9:59
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When is assembly faster than C?
...les that still need compiler-specific code, see
Getting the high part of 64 bit integer multiplication: A portable version using uint64_t for 32x32 => 64-bit multiplies fails to optimize on a 64-bit CPU, so you need intrinsics or __int128 for efficient code on 64-bit systems.
_umul128 on Windo...
best practice to generate random token for forgot password
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I made a varchar(64) field in my sql database to store this token. I set $length to 64, but the string returned is 128 characters long. How can I get a string with a fixed size (here, 64 then) ?
– gordie
Feb 22 '16 at 19:12
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Cross compile Go on OSX?
... make says: # Building compilers and Go bootstrap tool for host, darwin/amd64 but later on it actually ends up as: --- Installed Go for windows/386 in /usr/local/go Installed commands in /usr/local/go/bin so one shall observe ending rather than beginning of compiling the compiler.
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