Difference between revisions of "ISBLANK()"
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==Purpose== | ==Purpose== | ||
Function to check for empty value | Function to check for empty value | ||
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==See Also== | ==See Also== | ||
| − | [[CTOD()]], [[CTOT()]], [[IIF()]], [[SET CENTURY]], [[SET DATE]], [[SET MARK]], [[SET SECONDS]], [[SPACE()]], [[TYPE()]] | + | [[CTOD()]], [[CTOT()]], [[IIF()]], [[IS_ARRAY()]], [[IS_FLOAT()]], [[IS_INT()]], [[IS_OBJECT()]], [[IS_STRING()]], [[ISALPHA()]], [[ISDIGIT()]], [[ISLOWER()]], [[ISUPPER()]], [[SET CENTURY]], [[SET DATE]], [[SET MARK]], [[SET SECONDS]], [[SPACE()]], [[TYPE()]] |
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!Data Type||Empty | !Data Type||Empty | ||
|- | |- | ||
| − | |Character||Space(0), "", [], | + | |Character||Space(0), "", [], ‘’, no text entered |
|- | |- | ||
|Date||CTOD(""),{}, {00/00/0000}, { / / } and other SET CENTURY, SET MARK and SET DATE variations | |Date||CTOD(""),{}, {00/00/0000}, { / / } and other SET CENTURY, SET MARK and SET DATE variations | ||
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==Products== | ==Products== | ||
| − | Recital | + | Recital, Recital Server |
[[Category:Documentation]] | [[Category:Documentation]] | ||
[[Category:Functions]] | [[Category:Functions]] | ||
Latest revision as of 11:04, 12 November 2009
Purpose
Function to check for empty value
Syntax
ISBLANK(<expC> | <expD> | <expT> | <expL> | <memofield> | <expN>)
See Also
CTOD(), CTOT(), IIF(), IS_ARRAY(), IS_FLOAT(), IS_INT(), IS_OBJECT(), IS_STRING(), ISALPHA(), ISDIGIT(), ISLOWER(), ISUPPER(), SET CENTURY, SET DATE, SET MARK, SET SECONDS, SPACE(), TYPE()
Description
The ISBLANK() function returns .T. if the specified expression is 'empty'.
| Data Type | Empty |
|---|---|
| Character | Space(0), "", [], ‘’, no text entered |
| Date | CTOD(""),{}, {00/00/0000}, { / / } and other SET CENTURY, SET MARK and SET DATE variations |
| Datetime | CTOT("") , { / / : : AM} and other SET CENTURY, SET MARK, SET SECONDS and SET DATE variations |
| Logical | .F. |
| Memo | No data entered |
| Numeric | 0 |
Example
if isblank(name + address) dialog box "Name and address not specified." endif
Products
Recital, Recital Server
