Assigning parameter on entry to a function and assigning back on exit

[Ali Çehreli]

On 11/25/22 05:06, Victor Porton wrote:

 >> A function argument that is both input and output, may be passed to
 >> the function either as reference or do two assignments: on entry of
 >> the function it is assigned to the parameter, on exit it is assigned
 >> back.

The way I understand it with C, C++, and D, if there were such an 
assignment back, that could only be performed by the caller. I don't 
think the ABIs of those languages support that behavior.

I think there is only pass by reference for out parameters.

Ali