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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...
Merge multiple lines (two blocks) in Vim
...
You can certainly do all this with a single copy/paste (using block-mode selection), but I'm guessing that's not what you want.
If you want to do this with just Ex commands
:5,8del | let l=split(@") | 1,4s/$/\=remove(l,0)/
will transform
work it
make it
do it
makes us
harder
better
faster...
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...
&& (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
...
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]
...
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
...
如何更改启动屏幕 - App应用开发 - 清泛IT社区，为创新赋能！
...”功能将Screen1复制一份为主屏幕，原来的Screen1改为登录页。
2、Screen1.初始化 中先跳转到登录页，登录成功再跳回来。（不过这个体验有些不好，启动之后即刻跳转屏幕会闪一下）用方法1，复制后，再将原制作的login页面各元...
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: ...
实战做项目如何选择开源许可协议（二）- 开放代码 - 开源 & Github - 清泛...
...登录。
在url输入 http://code.google.com/intl/zh-CN/ ，打开网页后，最下方有个 create a new project。
点击创建工程后，可以选择自己工程的开源协议。预定义协议支持不是太多，主要有常见的BSD、GPL、MIT、APACHE、ECLIPSE、MPL。没有包...