Gambas Documentation

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IsNull

bRezultato = IsNull ( vEsprimo ) AS Boolean
bRezultato = Null? ( vEsprimo ) AS Boolean

Redonas TRUEn se esprimo vEsprimo estas NULL, alinome se gxi estas:

PRINT IsNull(NULL)

True

PRINT IsNull("Gambas")

False

PRINT IsNull("")

True