The MIT Curl debugger in their integrated IDE is for an expression-based language

��and so your are able to "watch" expressions of your own devising as you step through code - and drill down graphically into structured values such as object instances ; there is now an eclipse "plug-in" version of the IDE for SCSK Curl, but I am less fond of it !

I often wonder if the Rebol expression-based language might have been an alternative to Perl it had an IDE,,bur Rebol got nowhere in the past ... and Curl was using Regexp and still did not displace languages with no debugger .. let alone Curl's "live" doc's which are much like Smalltalk workspaces with Prof Stef but with a "save" and a "restore" ...�� Noe Laurie Pratt in London is working on an expression-baed language rather like Icon but which is indent-sensitive like Python ( and so we go back to SNOBOL 80-column cards ?�� ;-)

Regardless, I�� still DO hold out hope for Smalltalk, especially Pharo !

:-)

On 11 March 2014 13:11, <btc@openinworld.com> wrote:

Friedrich Dominicus wrote:

anyway. Has anyone considered adding filtering to the Debugger (in my
case the Glamorous Debugger) in a way that not all instance variables
values are shown in the value pane?

Well a kind of watch as in other debuggers. You just can "ask" to watch
e.g field firstName but not lastName or something like that. Even if I
try to keep the information down some classes still do have a lot of
elements (think of articles, which usually have at least some kind of
id, a description, a price tag, but also some other information (be it
internal or extenal for the programm)

��

I still fondly remember the Watch window from Turbo Pascal 30 years ago. ��You could also define expressions that updated every step so that you could drill down in data structures. ��I don't know what that would mean in Smalltalk terms. I guess you'd have to be more careful those expression had no side effects, or otherwise copy the target object of each message before it is sent.
cheers -ben