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Clear

Clear[symbol₁, symbol₂, ...]
clears values and definitions for the symbol_i.

Clear["form₁", "form₂", ...]
clears values and definitions for all symbols whose names match any of the string patterns form_i.

MORE INFORMATION

Clear does not clear attributes, messages, or defaults associated with symbols.

Clear allows abbreviated string patterns containing the following metacharacters:

	*	zero or more characters
	@	one or more characters, excluding upper-case letters
	\\*, etc.	literal *, etc.

Clear["context`*"] clears all symbols in a particular context.

Clear is HoldAll.

Clear does not affect symbols with the attribute Protected.

Basic Examples (2)

Clear a variable:

Clear a function definition:

Generalizations & Extensions (2)

Applications (1)

Properties & Relations (2)

Possible Issues (1)

Neat Examples (1)

ClearAll Unset TagUnset ClearAttributes Remove

Defining Variables

Defining Functions

Making Definitions

Manipulating Symbols and Contexts by Name

Memory Management

Assignments

Memory Measurement & Optimization

Symbol Handling

Tuning & Debugging

Defining Variables and Functions

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