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Exposing a port on a live Docker container
...with something running on its port 8000, you can run
wget http://container_ip:8000
To get the container's IP address, run the 2 commands:
docker ps
docker inspect container_name | grep IPAddress
Internally, Docker shells out to call iptables when you run an image, so maybe some variation on this w...
Explain the use of a bit vector for determining if all characters are unique
...it in your code states whether the character with bit's index was found in string or not. You could use bit vector for the same reason instead of int. There are two differences between them:
Size. int has fixed size, usually 4 bytes which means 8*4=32 bits (flags). Bit vector usually can be of dif...
Why is MySQL's default collation latin1_swedish_ci?
...general_ci.
Compared to latin1_general_ci it has support for a variety of extra characters used in European languages. So it’s a best choice if you don’t know what language you will be using, if you are constrained to use only single byte character sets.
...
What is the meaning of “… …” token? i.e. double ellipsis operator on parameter pack
...emonstration of the double ellipsis:
#include <cstdio>
#include <string>
template< typename T >
T const &printf_helper( T const &x )
{ return x; }
char const *printf_helper( std::string const &x )
{ return x.c_str(); }
template< typename ... Req, typename...
What is a web service endpoint?
...- variables - ex: myVar, x, y, etc.
Types - data types - ex: int, double, String, myObjectType
Operations - methods/functions - ex: myMethod(), myFunction(), etc.
Messages - method/function input parameters & return types
ex: public myObjectType myMethod(String myVar)
Porttypes - classes ...
Regex to remove all (non numeric OR period)
...
This should do it:
string s = "joe ($3,004.50)";
s = Regex.Replace(s, "[^0-9.]", "");
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mac如何远程连接windows系统？类似Windows的mstsc？ - 开源 & Github - 清...
...c 客户端，只需要Windows电脑开启远程桌面连接，然后通过IP地址就可以在Mac上控制Windows电脑。Remote Desktop Connection for mac可以同时连接多台 Windows 机器，直接使用 Mac 打印机打印远程文档，甚至可以选择远程声音是在本地 Mac 播放...
What is a simple command line program or script to backup SQL server databases?
... the following to backup all Databases:
Use Master
Declare @ToExecute VarChar(8000)
Select @ToExecute = Coalesce(@ToExecute + 'Backup Database ' + [Name] + ' To Disk = ''D:\Backups\Databases\' + [Name] + '.bak'' With Format;' + char(13),'')
From
Master..Sysdatabases
Where
[Name] Not In ('te...
Socket 错误返回码详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...和recvfrom()
對於datagram socket，socket沒有呼叫bind()函式指定IP位址、port和協定等；對於stream socket，連接尚未建立
send()和sendto()
對於datagram socket，socket沒有呼叫bind()函式指定IP位址、port和協定等；對於stream socket，連接尚未建立
...
User recognition without cookies or local storage
I'm building an analytic tool and I can currently get the user's IP address, browser and operating system from their user agent.
...