13.10 Summary

In this chapter, we covered the following:

• We illustrated Dylan modules and libraries.

• We showed how to design modules using three roles: interface modules, implementation modules, and client modules.

• We described how a library might appear in Dylan interchange format.

• We showed how to create a component library.

• We illustrated the complexity of component and protocol design.

• We discussed how to create a protocol that can be extended by multiple client libraries.

• We discussed namespaces in Dylan, and their applicable scope; see Table 13.1.

• We described the roles of modules and the definition clauses that modules use; see Table 13.2.

// Interface class
create <time>;
// Re-exported interface
use say, export: all;

// Substrate module
use dylan;

// Interface module
use time;

// Interface protocol
export say;