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Parameter Passing by Value or by Reference

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You can pass variables or array elements as parameters by reference or by value. To change parameters passed to and returned from a UDF, pass by reference. To maintain the original value of parameters passed to a UDF, even if the UDF changes the values within the UDF, pass by value.

By default, Visual FoxPro passes parameters to UDFs by value. Objects are always passed by reference.

See Also

Passing Parameters by Reference | Passing Parameters by Value | User-Defined Functions | Data Manipulation