4D v13.4

Asserted

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4D v13.4
Asserted

Asserted 


 

Asserted ( boolExpression {; messageText} ) -> Function result 
Parameter Type   Description
boolExpression  Boolean in Boolean expression
messageText  Text in Text of error message
Function result  Boolean in Result of evaluation of boolExpression

The Asserted command has an operation similar to that of the ASSERT command, with one difference in that it returns a value which is the result of the evaluation of the boolExpression parameter. It therefore allows the use of an assertion during the evaluation of a condition (see the example). For more information about the operation of assertions and the parameters of this command, please refer to the description of the ASSERT command.

Asserted accept a Boolean expression as a parameter and returns the result of the evaluation of this expression. If the expression is false and if the assertions are enabled (see the SET ASSERT ENABLED command), the error -10518 is generated, exactly as for the ASSERT command. If the assertions are disabled, Asserted returns the result of the expression that was passed without triggering an error.

Example  

Insertion of an assertion in the evaluation of an expression:

 READ WRITE([Table 1])
 LOAD RECORD([Table 1])
 If(Asserted(Not(Locked([Table 1]))))
  // This code triggers the error -10518 if the record is locked
    ...
 End if

 
PROPERTIES 

Product: 4D
Theme: Interruptions
Number: 1132

This command modifies the Error system variable

 
INDEX

Alphabetical list of commands

 
HISTORY 

Created: 4D v12

 
SEE ALSO 

ASSERT
Get assert enabled
SET ASSERT ENABLED