Difference between revisions of "IS LOGICAL()"
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[[Category:VFP Function Extensions]] | [[Category:VFP Function Extensions]] |
Latest revision as of 08:12, 4 February 2013
Purpose
Function to check whether an expression is a logical
Syntax
IS_LOGICAL(<exp>)
See Also
IS_ARRAY(), IS_DATE(), IS_FLOAT(), IS_INT(), IS_NUMERIC(), IS_OBJECT(), IS_STRING(), ISALPHA(), ISDIGIT(), ISLOWER(), ISUPPER(), LOCAL, PRIVATE, PUBLIC, RELEASE, RESTORE, SAVE, TYPE()
Description
The IS_LOGICAL() function returns .T. (true) if the specified expression is a logical value, otherwise .F. (false).
Example
> ? is_logical(.T.) .T. > ? is_logical(True) .T. > ? is_logical(False) .T. > ? is_logical(2 = 1 + 1) .T.
Products
Lianja, Lianja Server