Unknown Syntax?

[NGen]

While looking at some of the code for RakNet, I've seen code like this:

virtual void PreDestruction(RakNet::Connection_RM3 *sourceConnection){(void) sourceConnection;}

all over the place, but I've never seen this before. Is this some special syntax for deleting an object, or what? (Referring to the definition of the method)

[Peter87]

Are you referring to this (void) sourceConnection;? That code does nothing. I think it's just used to suppress warnings about unused parameter.

[NGen]

Really? I've never seen that before, I didn't know you could use it like that. Thanks.