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not

Prototype:not(expression)

Return type:boolean

Description: Returnsany if all arguments evaluate to false and!any ifany argument evaluates to true.

Arguments:

• expression:string - Class value - in the range:.*

Argument Descriptions:

• expression - Class, class expression, or function that returns a class

Example:

commands:"/usr/bin/generate_config$(config)"if=>not(fileexists("/etc/config/$(config)"));

Notes: Introduced primarily for use withif andunless promise attributes.

See also:and(),or()

History:

• Introduced in 3.2.0, Nova 2.1.0 (2011)
• Return type changed fromstring toboolean in 3.17.0 (2020) (CFE-3470)

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