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2 Design Choices and Extensions

Several design choices in Common Lisp are left to the individual implementation, and some essential parts of the programming environment are left undefined. This chapter discusses the most important design choices and extensions.

• Data Types
• Default Interrupts for Lisp
• Implementation-Specific Packages
• Hierarchical Packages
• Package Locks
• The Editor
• Garbage Collection
• Describe
• The Inspector
• Load
• The Reader
• Stream Extensions
• Simple Streams
• Running Programs from Lisp
• Saving a Core Image
• Pathnames
• Filesystem Operations
• Time Parsing and Formatting
• Random Number Generation
• Lisp Threads
• Lisp Library
• Generalized Function Names
• CLOS
• Differences from ANSI Common Lisp
• Function Wrappers
• Dynamic-Extent Declarations
• Modular Arithmetic
• Extension to REQUIRE
• Localization
• Static Arrays