ISREF |
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state = ISREF( var-name AS REFERENCE ) AS INTEGER
Returns TRUE (1) if the var-name is a valid address/pointer. This is the same as "return ( pRef != NULL )" in C/C++.
Example:
DIM ptr AS REFERENCE DIM nils AS INTEGER
ptr = REF( nils ) n = ISREF( ptr ) ' Returns 1 (TRUE)
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