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Is there a way to create multiline comments in Python?
... elif token == '\\or':
do_something_else()
elif token == '\\xor':
'''
Note that we still need to provide support for the deprecated
token \xor. Hopefully we can drop support in libfoo 2.0.
'''
do_a_different_thing()
else:
raise Valu...
What does value & 0xff do in Java?
... ;//(.....000110)
onWhichThisHasTobeReSet &= thirdBitTobeReSet;
XOR
Just note that if you perform XOR operation twice, will results the same value.
byte toBeEncrypted = 0010 0110
byte salt = 0100 1011
byte encryptedVal = toBeEncrypted ^ salt == 0110 1101
byte decryptedV...
How to implement a good __hash__ function in python [duplicate]
...more expensive than it needs to be.
Edit: I would recommend against using xor to mix hashes in general. When two different properties have the same value, they will have the same hash, and with xor these will cancel eachother out. Tuples use a more complex calculation to mix hashes, see tuplehash i...
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
...
&& (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 ...
SEH stack 结构探索（1）--- 从 SEH 链的最底层（线程第1个SEH结构）说起 -...
...word ptr [ntdll32!__security_cookie (77822088)]
7774dd46 3145fc xor dword ptr [ebp-4],eax
7774dd49 33c5 xor eax,ebp
7774dd4b 50 push eax
7774dd4c 8965e8 mov dword ptr [ebp-18h],esp
7774dd4f ff75f8 push dword ptr [ebp-8]
...
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
...
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: ...
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
...