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Discuz开启帖子快速回复，设置无效 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... $allowfastpost = false;
}
$fastpost = $allowfastpost;
主题列表页设置开，帖子内容页里无论设置是开还是关，都是有快速回复的；
主题列表页设置关，帖子内容页里无论设置是开还是关，都是没快速回复的；
Discuz 快速回复
剖析程序的内存布局 - C/C++ - 清泛网 - 专注C/C++及内核技术
...位模式下它总是一个4GB的内存地址块。这些虚拟地址通过页表（page table）映射到物理内存，页表由操作系统维护并被处理器引用。每一个进程拥有一套属于它自己的页表，但是还有一个隐情。只要虚拟地址被使能，那么它就会...
Creating a “logical exclusive or” operator in Java
...
Java does have a logical XOR operator, it is ^ (as in a ^ b).
Apart from that, you can't define new operators in Java.
Edit: Here's an example:
public static void main(String[] args) {
boolean[] all = { false, true };
for (boolean a : all...
Remove duplicates in the list using linq
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var distinctItems = items.GroupBy(x => x.Id).Select(y => y.First());
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What are bitwise operators?
...ns
00000001
which is not 0, so the flag does specify READ.
You can use XOR to toggle various bits. I've used this when using a flag to specify directional inputs (Up, Down, Left, Right). For example, if a sprite is moving horizontally, and I want it to turn around:
Up: 00000001
Down: ...
How to toggle a value in Python
...5
>>> x = total - x # toggle
>>> x
3
Solution using XOR
If the value toggles between 0 and 1, you can use a bitwise exclusive-or:
>>> x = 1
>>> x ^= 1
>>> x
0
>>> x ^= 1
>>> x
1
The technique generalizes to any pair of integers....
Write bytes to file
...gth)
.Where(x => x % 2 == 0)
.Select(x => Convert.ToByte(hex.Substring(x, 2), 16))
.ToArray();
}
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Why can't (or doesn't) the compiler optimize a predictable addition loop into a multiplication?
... test esi, esi
jle .LBB0_1
mov r9d, esi
xor r8d, r8d
xor esi, esi
xor eax, eax
.LBB0_4: # =>This Inner Loop Header: Depth=1
movsxd rdx, dword ptr [rdi + 4*rsi]
imul rcx, rdx, 100000
...
近期 Chrome 下 Discuz 兼容问题修复记录：AJAX 提交失效与移动链接误跳转 ...
...还伴随扩展注入报错，但关闭扩展后问题依旧存在
3. 页面没有明确报错，但提交后没有结果
原因：
Discuz 旧版很多“ajaxpost”实际上是通过隐藏 iframe 提交表单，再从 iframe 返回文档中读取结果。
这套老机制在新版 Chro...
How does this milw0rm heap spraying exploit work?
...add edx,esp
00000019 07 pop es
0000001A 67305CFF xor [si-0x1],bl
0000001E 98 cwde
0000001F BBD7FFA4FE mov ebx,0xfea4ffd7
00000024 9B wait
00000025 74AD jz 0xffffffd4
00000027 058B8B028D add eax,0x8d028b8b
0000002...