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What are the advantages of using nullptr?
...har *)
{
std::cout<<"In char* version";
}
int main()
{
char *pc = nullptr; // Case 1
int i = nullptr; // Case 2
bool flag = nullptr; // Case 3
doSomething(nullptr); // Case 4
return 0;
}
In the above program,
Case 1: OK - Property 2
Case...
How to automatically generate a stacktrace when my program crashes
...6. I have also successfully implemented this on ARM using uc_mcontext.arm_pc instead of uc_mcontext.eip.
Here's a link to the article where I learned the details for this implementation:
http://www.linuxjournal.com/article/6391
...
When is assembly faster than C?
...)
Modern CPUs can do things C doesn't have operators for at all, like popcnt or bit-scan to find the first or last set bit. (POSIX has a ffs() function, but its semantics don't match x86 bsf / bsr. See https://en.wikipedia.org/wiki/Find_first_set).
Some compilers can sometimes recognize a loop...
Is either GET or POST more secure than the other?
...xR'u/
T/yO3dS&??hIOB/?/OI?$oH2_?c_?OsD//0/_s%r
GET over SSL
rV/O8ow1pc`?058/8OS_Qy/$7oSsU'qoo#vCbOO`vt?yFo_?EYif)
43`I/WOP_8oH0%3OqP_h/cBO&24?'?o_4`scooPSOVWYSV?H?pV!i
?78cU!_b5h'/b2coWD?/43Tu?153pI/9?R8!_Od"(//O_a#t8x?__
bb3D?05Dh/PrS6_/&5p@V f $)/xvxfgO'q@y&e&S0rB3D/Y_/fO?
_...
Using a piano keyboard as a computer keyboard [closed]
...s from any device.
These are Max for a Mac environment and Pure Data for a PC environment. Both have a plethora of online documentation and YouTube tutorials. The video Max/MSP Tutorial 1 - using your computer keyboard as midikeyboard (ableton style) demonstrates a program built in Max that maps a c...
不同品牌的防火墙组成高可靠性集群 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...linux 变成一台路由器
Zebra介绍介绍
Zebra 是一个 TPC/IP 路由软件，支持 BGP-4、BGP-4+、OSPFv2、OSPFv3、RIPv1、RIPv2 和 RIPng。它的发行遵循 GNU 通用公共许可协议，可以运行于 Linux 以及其他一些 Unix 变体操作系统上。Zebra 是那些系...
Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_
I was looking for the fastest way to popcount large arrays of data. I encountered a very weird effect: Changing the loop variable from unsigned to uint64_t made the performance drop by 50% on my PC.
...
Java 256-bit AES Password-Based Encryption
...ible to set the key length to 128-bits? Modifying security folder in every PC is not an option for me.
– IvanRF
Jul 17 '15 at 16:36
1
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What techniques can be used to speed up C++ compilation times?
...ossibleChoices = {Option1, Option2, Option3}
template <PossibleChoices pc>
struct foo { };
We know that this class can have three possible instantiations:
template class foo<PossibleChoices::Option1>;
template class foo<PossibleChoices::Option2>;
template class foo<PossibleCho...
What happens when a computer program runs?
...registers vary for other CPU architectures, such as ARM, MIPS, Alpha, PowerPC, but all of them execute instructions without passing them through the ALU.
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