jsonFree (Function)

jsonFree releases the resources used by a JSON object or array.

Input:

o : SYSHANDLE

A handle to the JSON object or array to release. Will be made invalid once it has been released.

Returns: INT

Declaration:

FUNCTION jsonFree : INT;
VAR_INPUT
  o     : ACCESS SYSHANDLE;
END_VAR;

Example:

INCLUDE rtcu.inc
 
PROGRAM test;
VAR
  rc  : INT;
  arr : SYSHANDLE;
  obj : SYSHANDLE;
END_VAR;
 
BEGIN
  ...
  // Create array
  rc := jsonCreateArray(o := arr);
  // Add integer
  rc := jsonAddValueInt(o := arr, value := 123);
  // Create object
  rc := jsonCreateObject(o := obj);
  // Add integer to object
  rc := jsonSetValueInt(o := obj, key := "Number", value := 42);
  // Replace integer in array with object
  rc := jsonSetValue(o := arr, idx := 0, value := obj);
  // Release object handle
  rc := jsonFree(o := obj);
  ...
END;
 
END_PROGRAM;