Re: function returning reference to empty object
James Kanze wrote:
What I'd like to know is what's wrong with simply:
CPlayer* FindPlayer( const SOCKET Socket )
{
// Get a reference in the map for this player
map_player::iterator it =
World.ConnectedPlayers.find( Socket );
return it == World.ConnectedPlayers.end()
? &it->second
: NULL ;
}
It's short and simple, and about the easiest solution to
understand.
Create a suitable exception class, with some string that gives
you the explanation of the error, and throw that.
If you have to throw. Throwing should generally be reserved for
exceptional cases.
Exactly. Exceptional given the semantic of an operation. For a function
that is called "FindPlayer" I definitely won't expect any exception to
be thrown if the player is not found. Differently, for a function like
"GetPlayer(PlayerID id)" I would usually consider the absence of that
player a good candidate for an exception to be thrown :)
Regards,
Zeppe
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