public IEnumerable <Guitar> Search(GuitarSpec searchSpec)
{
List <Guitar> matchingGuitars = new List <Guitar>();
foreach (Instrument instrument in inventory)
{
if (!(instrument is Guitar))
{
continue;
}
Guitar guitar = instrument as Guitar;
if (guitar.Spec.Matches(searchSpec))
{
matchingGuitars.Add(guitar);
}
}
return(matchingGuitars);
}
public override bool Matches(InstrumentSpec matchSpec)
{
if (!base.Matches(matchSpec))
{
return(false);
}
GuitarSpec guitarMatchSpec = matchSpec as GuitarSpec;
if (guitarMatchSpec == null)
{
return(false);
}
if (guitarMatchSpec.NumStrings != NumStrings)
{
return(false);
}
return(true);
}
public Guitar(String serialNumber, double price, GuitarSpec spec)
: base(serialNumber, price, spec)
{
}