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What is the best way to use a HashMap in C++?
...al hash values for first,
// second and third and combine them using XOR
// and bit shifting:
return ((hash<string>()(k.first)
^ (hash<string>()(k.second) << 1)) >> 1)
^ (hash<int>()(k.third) << 1);
}
};
}
...
max value of integer
...tter now, thanks! Too much Python, I suppose. I avoid ^ since it's usually xor
– Kos
Feb 21 '13 at 15:01
5
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Require either of two arguments using argparse
...er I realized it actually solves both conditions proposed in the question (XOR, basically). My initial concern was that yours only solved only one of the two conditions.
– ijoseph
Apr 13 '18 at 17:28
...
maximum value of int
...which is now set to maximum positive value.
We could also use a mask and xor but then we had to know the exact bitsize of the variable. With shifting in bits front, we don't have to know at any time how many bits the int has on machine or compiler nor need we include extra libraries.
...
What does this symbol mean in JavaScript?
..., ^, ~ — Single pipe, ampersand, circumflex, tilde: bitwise OR, AND, XOR, & NOT operators
What do these JavaScript bitwise operators do?
How to: The ~ operator?
Is there a & logical operator in Javascript
What does the "|" (single pipe) do in JavaScript?
What does the operator |= do i...
Why does C++ rand() seem to generate only numbers of the same order of magnitude?
...ut you should fix your answer using pow instead of ^ (which is the logical xor operator, not power, in C language).
– kriss
Jun 20 '13 at 14:20
6
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如何在Visual Studio中运行和调试汇编代码 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... _TCHAR* argv[])
{
int a = 1;
__asm{
xor eax, eax
mov a, eax
}
printf("hello:%d\n", a);
return 0;
}
运行结果：
下断点，F5调试：
Ctrl + Alt + D切换反汇编视图：
vs 调试 汇编代...
如何在Visual Studio中运行和调试汇编代码 - 其他 - 清泛IT社区，为创新赋能！
...p;__asm{
xor eax, eax
mov a, eax
}
printf("hello:%d\n", a);
...
how to use #ifdef with an OR condition?
...ex condition.
Further-
AND: #if defined LINUX && defined ANDROID
XOR: #if defined LINUX ^ defined ANDROID
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Using scanf() in C++ programs is faster than using cin?
...a simple case: a program to read a list of numbers from standard input and XOR all of the numbers.
iostream version:
#include <iostream>
int main(int argc, char **argv) {
int parity = 0;
int x;
while (std::cin >> x)
parity ^= x;
std::cout << parity << std::en...