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Why is address zero used for the null pointer?
... costly than now. The number zero can be conveniently calculated using an XOR instruction or without the need to load an immediate value. Depending upon the architecture, this could potentially save space.
– Sparky
May 3 '10 at 17:46
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What's the difference between the WebConfigurationManager and the ConfigurationManager?
... answered Mar 30 '09 at 17:50
XORXOR
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How to toggle a boolean?
...ing converted to a number (that is either 0 or 1), you can use the Bitwise XOR Assignment Operator. Like so:
bool ^= true; //- toggle value.
This is especially good if you use long, descriptive boolean names, EG:
var inDynamicEditMode = true; // Value is: true (boolean)
inDynamicEditMod...
When is CRC more appropriate to use than MD5/SHA1?
...
@gili: you can always just xor the dwords together to get a single resulting dword.
– Blindy
Jun 17 '09 at 9:09
2
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Win32汇编--使用MASM - C/C++ - 清泛网 - 专注C/C++及内核技术
...开指令和操作数可以使格式对齐，便于阅读。如：
xor eax,eax
fistp dwNumber
xchg eax,ebx
上述代码的写法就不如下面的写法整齐：
xor eax,eax
fistp dwNumber
xchg eax,ebx
还有就是缩进格式...
Is recursion ever faster than looping?
...ther position: e.g.: store m[4] m[8]
b) Logic and arithmetic
and, or, xor, not
add, sub, mul, div. e.g. add m[7] m[8]
An Executing Agent: a core in a modern CPU. An "agent" is something that can execute instructions. An Agent can also be a person following the algorithm on paper.
Order of step...
What is the function of the push / pop instructions used on registers in x86 assembly?
...nstant into stack memory and the stack pointer will be automatic decreased xor increased according number of words pushed or poped into (from) stack.
Via assembler instructions we can store to stack:
CPU registers and also constants.
Return addresses for functions or
procedures
Functions/procedu...
Seeding the random number generator in Javascript
...nitial states.
var seed = 1337 ^ 0xDEADBEEF; // 32-bit seed with optional XOR value
// Pad seed with Phi, Pi and E.
// https://en.wikipedia.org/wiki/Nothing-up-my-sleeve_number
var rand = sfc32(0x9E3779B9, 0x243F6A88, 0xB7E15162, seed);
for (var i = 0; i < 15; i++) rand();
The output of these ...
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
...d\nb=%d\nc=%d\n",a,b,c);
}
三、“异或”运算符(^)
也称XOR运算符。
1、运算规则
若参加运算的两个二进位同号，则结果为0（假）；异号则为1（真），即：
0^0=0，0^1=1，1^0=1，1^1=0.
2、用途
(1)使特定位翻转
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How do I make a list of data frames?
...ic indices to access your data frames (and you can use both, this isn't an XOR choice).
Overall, using lists will lead you to write cleaner, easier-to-read code, which will result in fewer bugs and less confusion.
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