public IEnumerable <Product> Filter(IEnumerable <Product> items, ISpeficiation <Product> spec)
{
foreach (var p in items)
{
if (spec.IsSatisfied(p))
{
yield return(p);
}
}
}
public AndFilterSpec(ISpeficiation <Open_Close.Product> filter1,
ISpeficiation <Open_Close.Product> filter2)
{
this.filter1 = filter1;
this.filter2 = filter2;
}
