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
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