/// <summary> /// Search for an Instrument like the one given as a parameter. /// </summary> /// <param name="searchGuitar">The Guitar to searcvh for.</param> /// <returns>A collection of all the guitars that match the criteria.</returns> public ICollection<Instrument> Search(InstrumentSpecification searchSpecification) { if (searchSpecification is null) throw new ArgumentNullException(nameof(searchSpecification)); List<Instrument> foundInstruments = new List<Instrument>(); foreach (Instrument instrument in instruments) { if (instrument.Specification.Matches(searchSpecification)) foundInstruments.Add(instrument); } return foundInstruments; }
public Instrument(string serialNumber, decimal price, InstrumentSpecification specification) { SerialNumber = serialNumber; Price = price; this.Specification = specification; }