public R GetOrElse <R>(IPointish p, Func <T, R> extractor, Func <IPointish, R> elze)
{
if (Dic.TryGetValue(p, out var v))
{
return(extractor(v));
}
return(elze(p));
}
public T GetNew(IPointish p, Action <T> initNew = null)
{
if (Dic.TryGetValue(p, out var v))
{
return(v);
}
var foo = new T
{
Pos = (P)p
};
initNew?.Invoke(foo);
Add(foo);
return(foo);
}
