Article ID: 103088
Article Last Modified on 12/3/2003
APPLIES TO
- Microsoft Visual FoxPro 3.0 Standard Edition
- Microsoft FoxPro 2.0
- Microsoft FoxPro 2.5b for MS-DOS
- Microsoft FoxPro 2.5a
- Microsoft FoxPro 2.5b
- Microsoft FoxPro 2.5a
This article was previously published under Q103088
SUMMARY
To determine if an entire array is empty, you can use the function shown below.
NOTE: There isn't a FoxPro function written for this purpose. The EMPTY() function comes close, but it will not return a correct answer if an array element that is not the first element in the array is populated with data.
MORE INFORMATION
The following function will return a logical false if any element in the entire array is populated with anything other than .F.:
FUNCTION aempty
PARAMETERS aname
FOR pass = 1 to ALEN(aname) STEP 1
retval = EMPTY(aname(pass))
IF retval
LOOP
ELSE
RETURN retval
ENDIF
ENDFOR
This function takes a single parameter <arrayname>. The syntax to call this function is as follows:
SET UDFPARMS TO REFERENCE
DIMENSION x(10)
x(5) = "junk"
? aempty(x)
NOTE: The elements in any array will initially be false (.F.) by default. Therefore, any element with a logical value of .F. is considered empty.
Additional query words: VFoxWin FoxDos FoxWin
Keywords: kbcode KB103088
