value change

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1 total messages Started by Frans Panken Tue, 25 Jun 1996 00:00

#293

Author: Frans Panken
Date: Tue, 25 Jun 1996 00:00

29 lines
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Can anyone give me any comments on the following:

Suppose a procedure activates a PROCESS CLASS with a local ARRAY "A"
as parameter. When after activation of this process class the array
"A" is changed within the procedure, the local array in the class
that was just activated changes as well !
This does not occur in the case of reals, integers, booleans etc.

So, if a procedure activates a number (say N) of classes and passes
arrays to these classes, the values in the local arrays of classes 1
.. N-1 change into the values given to the class which was activated
last (i.e.  class number N).

This observation worries me a bit; are there any other declarations
that will change in this manner ??


Frans
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Frans Panken                              UUCP: uunet!cs.kun.nl!fransp
University of Nijmegen,           ,==.    tel: +31 24 3652450
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