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What is the largest Safe UDP Packet Size on the Internet
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It is true that a typical IPv4 header is 20 bytes, and the UDP header is 8 bytes. However it is possible to include IP options which can increase the size of the IP header to as much as 60 bytes. In addition, sometimes it is necessary for intermedia...
图表组件 · App Inventor 2 中文网
...颜色，使用RGBA数值表示。
描述
指定图表内描述标签显示的文本。指定空字符串 (“”) 将不会显示标签。
启用网格
更改图表网格的可见性，如果图表类型设置为带轴的图表（适用于面积图、条形图、折线图、散点图类型...
Why can't C compilers rearrange struct members to eliminate alignment padding? [duplicate]
...
There are multiple reasons why the C compiler cannot automatically reorder the fields:
The C compiler doesn't know whether the struct represents the memory structure of objects beyond the current compilation unit (for example: a foreign ...
Access mysql remote database from command line
...below command:
mysql -u {username} -p'{password}' \
-h {remote server ip or name} -P {port} \
-D {DB name}
For example
mysql -u root -p'root' \
-h 127.0.0.1 -P 3306 \
-D local
no space after -p as specified in the documentation
It will take you to the mysql console dir...
How to convert an IPv4 address into a integer in C#?
I'm looking for a function that will convert a standard IPv4 address into an Integer. Bonus points available for a function that will do the opposite.
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java.net.ConnectException: localhost/127.0.0.1:8080 - Connection refused
...ly i am doing the same thing. Can u explain in detail. Where to change the ip address to 10.0.2.2. This is the folder i am trying to access from xampp server localhost:8080/aero
– pradeep
Mar 31 '11 at 5:56
...
C++中智能指针的设计和使用 - C/C++ - 清泛网 - 专注C/C++及内核技术
...可以访问U_Ptr的成员
class U_Ptr
{
friend class HasPtr;
int *ip;
size_t use;
U_Ptr(int *p) : ip(p) , use(1)
{
cout << "U_ptr constructor called !" << endl;
}
~U_Ptr()
{
delete ip;
cout << "U_ptr distructor called !" << endl;
}
};
HasPtr类需要一个析...
使用虚拟现实和App Inventor进行实验 · App Inventor 2 中文网
...pp Inventor 中的方法。本文介绍了两个原型应用程序，一个显示沉浸式全景图，另一个添加了 3-D 建模。我们提供了可供下载和试用的演示 APK 文件，以及您可以用作演示变体起点的 App Inventor 项目 (aia) 文件。演示的核心是一个用 J...
How can I do DNS lookups in Python, including referring to /etc/hosts?
...y sure if you want to do DNS lookups yourself or if you just want a host's ip. In case you want the latter,
import socket
print(socket.gethostbyname('localhost')) # result from hosts file
print(socket.gethostbyname('google.com')) # your os sends out a dns query
...
Max length for client ip address [duplicate]
...uld you recommend as the maximum size for a database column storing client ip addresses? I have it set to 16 right now, but could I get an ip address that is longer than that with IPv6, etc?
...