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c/c++如何获取CPU的序列号？ - C/C++ - 清泛网 - 专注C/C++及内核技术
...-----";
char CPUSERIAL[20];
memset(CPUSERIAL,0,20);
__asm{
xor eax,eax
cpuid
mov dword ptr vendor_id,ebx
mov dword ptr vendor_id[+4],edx
mov dword ptr vendor_id[+8],ecx
}
__asm{
mov eax,01h
xor edx,edx
cpuid
mov s1,edx
...
What does the [Flags] Enum Attribute mean in C#?
...operator, AllowedColors looks like this:
myProperties.AllowedColors: 00001110
So when you retrieve the value you are actually performing bitwise AND & on the values:
myProperties.AllowedColors: 00001110
MyColor.Green: 00000010
-----------------------
...
&& (AND) and || (OR) in IF statements
... or; ((A?1:0) * (B?1:0)) == 1, ((A?1:0) + (B?1:0)) > 0. You can even do xor: ((A?1:0) + (B?1:0)) == 1.
– outis
Nov 27 '09 at 12:19
1
...
How to swap two variables in JavaScript
... swap without using a third variable. For instance you can use the bitwise xor operator:
let a = 1, b = 2;
a = a ^ b;
b = a ^ b;
a = a ^ b;
console.log('a is now:', a);
console.log('b is now:', b);
This is called the XOR swap algorithm. Its theory of operation is described in ...
Is there a standardized method to swap two variables in Python?
...w three ways to swap variables, but a, b = b, a is the simplest. There is
XOR (for integers)
x = x ^ y
y = y ^ x
x = x ^ y
Or concisely,
x ^= y
y ^= x
x ^= y
Temporary variable
w = x
x = y
y = w
del w
Tuple swap
x, y = y, x
...
C#位运算符（C#按位与、按位或 等） - 更多技术 - 清泛网 - 专注C/C++及内核技术
...
比如，对二进制的10010001进行位逻辑非运算，结果等于01101110，用十进制表示就是：
~145等于110；对二进制的01010101进行位逻辑非运算，结果等于10101010。用十进制表示就是~85等于176。
2、位逻辑与运算
位逻辑与运算将两个运...
Python argparse: Make at least one argument required
...
I think he wants to allow --process OR --upload, not XOR. This prevents both options from being set at the same time.
– phihag
Jul 17 '11 at 9:54
...
Sort points in clockwise order?
... xmm4, xmm0, xmm2
vmovss xmm0, DWORD PTR [edx+4]
push ebx
xor ebx, ebx
vxorps xmm3, xmm3, xmm3
vcomiss xmm4, xmm3
vsubss xmm5, xmm0, xmm1
seta bl
xor ecx, ecx
vcomiss xmm5, xmm3
push esi
seta cl
; 30 : const int qa = (1 - dax) + (1 - ...
Random row from Linq to Sql
...Shuffle & seed)) & (s.Shuffle | seed)); // ^ seed);
This does an XOR operation in the database and orders by the results of that XOR.
Advantages:-
Efficient: SQL handles the
ordering, no need to fetch the whole
table
Repeatable: (good for
testing) - can use the same random
seed to gener...
Ternary operator is twice as slow as an if-else block?
...32: foreach (int i in array)
0000007c 33 D2 xor edx,edx
0000007e 83 7E 04 00 cmp dword ptr [esi+4],0
00000082 7E 1C jle 000000A0
00000084 8B 44 96 08 mov eax,dword ptr [esi+edx*4+8]
33: ...