compiling-expression

public static Func<T, bool> ExBuildEqFuncFor<T>(string prop, object val)
{
    var o = Expression.Parameter(typeof(T), "t");
             	Expression<Func<T, bool>> expression =
          			Expression.Lambda<Func<T, bool>>(
            			Expression.Equal(
                 			Expression.PropertyOrField(o, prop),
                 				Expression.Constant(val)), o);

    return expression.Compile();
}