[5478] in java-interest
Copy Constructors, and other Missing Links
daemon@ATHENA.MIT.EDU (Reginald Braithwaite-Lee)
Mon Feb 12 02:19:29 1996
Date: Mon, 12 Feb 1996 00:47:33 -0400
To: java-interest@java.sun.com
From: opendocguy@codestorm.com (Reginald Braithwaite-Lee)
Hello:
I'm learning Java the old fashioned way, by re-writing some of the sample
applications using my preferred OO style(s). The main problem I'm having is
specifying new classes without a copy constructor and assignment overload.
Am I missing something, or is it impossible to do?
I *need* this. For example, I'm implementing dependency networks, similar
to Digitalk SmallTalk's SharedValue. What I would do in C++ is overload
assignment so that modifications to the value would send update() messages
to a SharedValue's dependents. My workaround is to use a setValue(...)
method.
Also, are there standard collection classes such as Bag or Set? If so,where
are they documented?
And finally, how does one write envelope classes (or handler classes, if
you prefer)? I can't seem to find any reference to either pointer
dereference overloading, or to method dispatching (sendMessage:#foo in
SmallTalk terms).
Am I missing some simpler, more elegant approach which removes the need for
these constructions, or are they simply not needed at this time? Or have I
simply missedome important documentation?
Thanks in advance...
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