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Alternatives

is a pattern object which represents any of the patterns

.

MORE INFORMATION

If a named pattern such as appears in that are not used in a particular match, then the named pattern is taken to have a value that is a zero-length sequence Sequence.

Basic Examples (1)

Replace instances of either

or

:

Replace instances of either

or

:

Out[1]=

Pick out integers or reals:

Optional Except Cases StringExpression

Patterns Involving Alternatives

Patterns for Some Common Types of Expression

String Patterns

Language Overview

Patterns

Rules & Patterns

String Patterns

Mathematica Syntax

Defining Variables and Functions

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