.ISEMPTY(expr$)
The .ISEMPTY function returns a boolean (.TRUE or .FALSE) for depending on whether the string or unformatted expression is "empty", defined as follows:
•If the expression is .NULL, i.e. if .ISNULL(expr$) returns .TRUE
•In the case of a string expression, if expr$ = "", i.e. if it contains zero or more blanks up to the first null, and another more.
•In the case of an unformatted variable or expression, if it contains only null bytes.
Also See
| • | IFE |
History
2023 August, A-Shell 6.5.1742: Function added to A-Shell
