This article applies to:

Sure Function

Relevance:

Variable occurrences within this function do not contribute towards the overall relevance of those variables.

Consequently, such variables must occur in at least one other context for them to be considered relevant.

Description:

Test if the variable is sure.

Returns true if the variable's value is known and is sure, and returns false otherwise.

note

This function is non-evaluable if the variable does not exist in the dictionary.

Returns:

Boolean

Parameter:

Parameter	Data Type	Description
1	Any	The name of the variable.

Examples:

Expression	Result
Sure( Var ) where Var has a value which is sure	true
Sure( Var ) where Var has a value which is unsure	false
Sure( Var ) where Var does not have a value	false