Squeak 3.9 differences from Smalltalk80?

I'm working through a fairly ancient intro to Smalltalk-80
called "Smalltalk-80 A Practical Introduction" by Philip Gray.

A lot of the methods that Gray uses don't exist in quite
the same form in my Squeak (3.9 under Ubunto 10)(*).

I can generally figure it out eventually by studying the
browser, but I understood Squeak started out as a clone
of the original ST-80? So I wondered where/when the
differences came in. And also if there is a crib sheet
of what the differences are? (Which would save me some
time!)

BTW I've also been using SBE but I wanted to try the
examples in the Gray book just for fun...

(*)An example is in PopUpMenu where Gray uses a "reset"
message which doesn't seem to exist in Squeak. He also uses
a "startUpWithHeading:" which is "startUpWithCaption:" in
Squeak.

--
Alan G
Author of the Learn to Program web site
http://www.alan-g.me.uk/

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Squeak is derived from ST-80 release 1, which was shipped to hardware vendors like Apple. The system has evolved gradually over time. There have been a lot of improvements, and a lot of cruft built up too. I don't know of a crib sheet of differences between Squeak and ST-80, but there is a good crib sheet for Squeak, it's called Terse Guide to Squeak. It's in the help menu in recent Squeak images, and also here:
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On 25/12/11 18:17, Casey Ransberger wrote:

> don't know of a crib sheet of differences between Squeak and ST-80, but
> there is a good crib sheet for Squeak, it's called _Terse Guide to
> Squeak_. It's in the help menu in recent Squeak images, and also here:
>
> http://wiki.squeak.org/squeak/5699

Thanks, I hadn't seen that. It will indeed be useful.


--
Alan G
Author of the Learn to Program web site
http://www.alan-g.me.uk/

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