The Mathematica Book Online: Principles of Mathematica

The Wayback Machine - https://web.archive.org/web/20050214173246/http://documents.wolfram.com:80/mathematica/book/section-2.3

Principles of Mathematica

Part 2: Principles of Mathematica

Section 2.3: Patterns

2.3.1		Introduction
2.3.2		Finding Expressions That Match a Pattern
2.3.3		Naming Pieces of Patterns
2.3.4		Specifying Types of Expression in Patterns
2.3.5		Putting Constraints on Patterns
2.3.6		Patterns Involving Alternatives
2.3.7		Flat and Orderless Functions
2.3.8		Functions with Variable Numbers of Arguments
2.3.9		Optional and Default Arguments
2.3.10		Setting Up Functions with Optional Arguments
2.3.11		Repeated Patterns
2.3.12		Verbatim Patterns
2.3.13		Patterns for Some Common Types of Expression
2.3.14		An Example: Defining Your Own Integration Function