# .ISEMPTY()

> [HTML Version](isempty().htm)

**.ISEMPTY(expr\$)**

The .ISEMPTY() function returns a boolean value (.TRUE or .FALSE) depending on whether the string or unformatted expression is empty, where "empty" is defined as meeting one of the following conditions:

- 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 nothing more.

- In the case of an unformatted variable or expression, if it contains only null bytes.

**Also See**

•	[IFe()](ife()andife$().htm.md)

•	[IFELSE()](ifelseandifelse$().htm.md)

•	[.ISNULL()](specialordmapfunctions.htm.md)

**History**

2023 August, A-Shell 6.5.1742:  Function added to A-Shell.