Boost库是一个可移植02

WeemphasizelibrariesthatworkwellwiththeC++StandardLibrary.Boostlibrariesareintendedtobewidelyuseful,andusableacrossabroadspectrumofapplications.TheBoostlicenseencouragesbothcommercialandnon-commercialuse.Weaimtoestablish"existingpractice"andprovidereferenceimplementationssoth