varexists_return_symbol_existence_.htm
Navigation: Templates > Template Language Reference > Built-in Template Procedures >====== VAREXISTS (return symbol existence)  ====== |    |
VAREXISTS( symbol )
| EXISTS | Returns TRUE if the symbol is available for use. |
| symbol | The symbol whose existence is in question. |
The VAREXISTS procedure returns true ('1') if the symbol is available for use, at design-time only. If the symbol is not available for use, VAREXISTS returns false ('').
Return Data Type: LONG
Example:
#IF(NOT VAREXISTS(%MySymbol))
#DECLARE(%MySymbol)
#ENDIF
See Also: #DECLARE
varexists_return_symbol_existence_.htm.txt · Last modified: 2021/04/15 15:57 by 127.0.0.1