Re: [Haskell-cafe] Re: Is there anyone out there who can translate C# generics into Haskell?

Achim Schneider wrote:

things like

data State = State { winSize :: IORef Size , t :: IORef Int , fps :: IORef Float , showFPS :: IORef Bool , showHelp :: IORef Bool , grabMouse :: IORef Bool , mousePos :: IORef (Maybe Position) , mouseDelta :: IORef Position , viewRot :: IORef Vec3 , angle' :: IORef GLfloat , ballPos :: IORef Vec2 , ballVel :: IORef Vec2 }

Yuck! I'm not sure whether this is a real example or not, but if it's real, get rid of all those IORefs. Make State a simple type, and use (IORef State) as needed for callbacks, and hide that fact in other code. Jules