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How to remove an item for a OR'd enum?
...
What about xor(^)?
Given that the FLAG you are trying to remove is there, it will work.. if not, you will have to use an &.
public enum Colour
{
None = 0, // default value
RED = 2,
BLUE = 4,
GREEN = 8,
YELLOW ...
What does the [Flags] Enum Attribute mean in C#?
...
If you want to exclude a flag from the enumeration, use xor, which is ^ in C#. So if you have myProperties.AllowedColors = MyColor.Red | MyColor.Green | MyColor.Blue;. You can do: myProperties.AllowedColors = myProperties.AllowedColors ^ MyColor.Blue //myProperties.AllowedColors =...
What is getattr() exactly and how do I use it?
...alues:
>>> dir(1000)
['__abs__', '__add__', ..., '__trunc__', '__xor__', 'bit_length', 'conjugate', 'denominator', 'from_bytes', 'imag', 'numerator', 'real', 'to_bytes']
>>> obj = 1000
>>> for attr_name in dir(obj):
... attr_value = getattr(obj, attr_name)
... pr...
How are echo and print different in PHP? [duplicate]
... is just about at the bottom
of the precedence list though. Only , AND OR XOR are lower.
Parameter(s). The grammar is: echo expression [, expression[,
expression] ... ] But echo ( expression, expression ) is not valid.
This would be valid: echo ("howdy"),("partner"); the same as: echo
"howdy","...
Redefining NULL
... trick is to hack the compiler so that pointer<->integer conversions XOR a specific value that is an invalid pointer and still trivial enough that the target architecture can do that cheaply (usually, that would be a value with a single bit set, such as 0x20000000).
– Sim...
ZMQ: 基本原理 - 开源 & Github - 清泛网 - 专注C++内核技术
...应用程序。 比如：假设有一个图像转换服务，调整图像到所需的尺寸和分辨率。所有提供转换的服务、所有使用该服务的应用程序以及所有的中间节点，比如负载均衡等，共同组成了拓扑。 通常，拓扑具有以下属性： ...
Git: Remove committed file after push
... answered Feb 26 '14 at 12:25
xorxor
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浅谈服务器单I/O线程＋工作者线程池模型架构及实现要点 - 更多技术 - 清泛...
...epoll并等待，有I/O请求（socket）到达时，将其加入epoll并从线程池中取一个空闲工作者线程，将实际的任务交由工作者线程处理。
伪码：
创建一个epoll实例;
while(server running)
{
epoll等待事件;
if(新连接到达且是有效连接...
内网时间同步问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...时间的 NTP 服务器， ntpdate 命令设置本地日期和时间。它从指定的每个服务器获得了一些样本，并应用标准 NTP 时钟过滤器和选择算法来选择最好的样本。此 ntpdate 命令使用以下方法进行时间调整：
* 如果它确定时钟偏差超过...
Is there a better way of writing v = (v == 0 ? 1 : 0); [closed]
...in different languages (VB). Yes a quick look-up will tell you that its an XOR operator and you will understand what its doing, but to many it may not be obvious at first glance. I don't think that means you need to quit your job.
– JD Isaacks
Aug 2 '11 at 15:4...