What does this Code Snippet mean / and what is the "Google keyword" for this?

Using Arduino Programming Questions
1

Hey ^^,

want to create a webserver inside a class becuase of some problems i had to search to solve my problem ... however i found one solution here (First answer)...

it works fine but what does the following Code snippet do (in general the solution too)
(Please pay attention about the Wifi::wifi ":" and not ";")
foo.h

class Wifi{
  private:
    ESP8266WebServer server;   
    WebSocketsServer webSocket;
  public:
    Wifi(void);
};
}

foo.cpp

Wifi::Wifi() :
   server(80),
   webSocket(81)
{
}

I understand the .h File but what is that:

Wifi() :
   server(80),
   webSocket(81)
{
}

Why Constructor:Command / functionName:Command {}
-> What is the "name" for this type of Code - e.g Lambda function

Thanks for help ^^

j54j6

2

"C++ initialiser list"

3