Type Activator with Lambdas

TypeActivator.cs

internalstaticclass TypeActivator    
{        
  public static Func<TBase> Create<TBase>(Type instanceType) 
    where TBase : class        
{            
  Contract.Assert(instanceType != null);            
  NewExpression newInstanceExpression = Expression.New(instanceType);            
  return Expression.Lambda<Func<TBase>>(newInstanceExpression).Compile();        
}        

public static Func<TInstance> Create<TInstance>() where TInstance : class        
{            
  return Create<TInstance>(typeof(TInstance));        
}        

public static Func<object> Create(Type instanceType)        
{            
  Contract.Assert(instanceType != null);            
  return Create<object>(instanceType);       
}