Ada Programming/Special/number sign

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Used for:

• Specify the base of a numeric literal.

Examples:

 Address : constant := 16#DEAD_BEEF#;
 Byte    : constant := 2#1010_1011#;

See also

Wikibook

• Ada Programming
• Ada Programming/Delimiters

Ada Reference Manual

• 2.1: Character Set ^[Annotated]

Ada Quality and Style Guide

• 2.1.1 Horizontal Spacing — Use consistent spacing around delimiters.