Planet Smalltalk

Interesting juxtaposition between these two from overnight:A Rocketboom syndicated TV-babe declares our virtual worlds as one of three reasons for her to go to California(!) among the far-from-product stuff at Intel Research Day.Appalachian State ...

This instruction is for getting started HACKING on the DeltaStreams package for Squeak. If you are into meta programming, advanced source code management and Squeak, it might be interesting. Thus it is not an instruction for users (it is not usable anyway) nor for Squeak beginners.

Step 1

Grab an image, I use 3.10.2-7179. It might be nice if you picked some other important target for DS, like say Croquet or Pharo. :)

Step 2

Install base image fixes for DeltaStreams (maintained as a CS for now), pick the one suitable:

        http://map.squeak.org/packagebyname/deltastreamfixes

Step 3

Add repos for DeltaStreams/Tirade/SystemEditor on SqueakSource and open them:

        MCHttpRepository
        location: 'http://www.squeaksource.com/DeltaStreams'
        user: ''
        password: ''

Step 4

Load the latest of ONLY the following packages from those repos:

        SystemEditor-Core
        SystemEditor-Squeak
        SystemEditor-Traits
        SystemEditor-Tests
        SystemEditorBrowser
        Tirade
        InterleavedChangeSet
        DeltaStreams-Model
        DeltaStreams-Logging
        DeltaStreams-Storing
        DeltaStreams-Tirade
        DeltaStreams-Tests
        DeltaStreams-Deprecated
        DeltaStreams-UI

NOTE: The DeltaStreams-Logging package is from Matthew, not sure of its status. DeltaStreams-Storing is meant to contain the parts needed for DS to use InterleavedChangeSet - which is the funky changeset-compatible format Matthew invented. I am not pursuing that format but I see no harm in keeping it. It might be a good idea too - I am not sure. DeltaStreams-Tirade is the reader/writer support for the Tirade format which is the preferred format for Deltas from now on. All tests are in DeltaStreams-Tests, there is a UI too but Matthew wrote it and I am unsure of its operational status. The DeltaStreams-Deprecated is a big pile of stuff that should in the end just be dumped. Consider it to be "candidates for death". :)

Eventually we would typically only really need (no ICS, no tests, no SE browser, no deprecated):

        SystemEditor-Core
        SystemEditor-Squeak
        SystemEditor-Traits
        Tirade
        DeltaStreams-Model
        DeltaStreams-Logging
        DeltaStreams-Tirade
        DeltaStreams-UI

Step 5

Run some tests. Currently there are tons of tests failing. I do not like this "state" so I am in the process of cleaning up, fixing what I can fix and possibly even throwing out red tests I can’t understand. We should always be all green, otherwise we don’t know if we broke something. These are the results in my image:

        SystemChangeNotifications-Tests: 1 error (it is a trivial fix I missed, will go away)
        Tirade-Tests: green
        SystemEditor-Tests: 11 failures of 181  (not sure why...)
        DSDeltaApplyTest: green
        DSDeltaLoggingTest: green
        DSDeltaCreationTest: green
        DSDeltaClassifyTest: green
        DSDeltaAntiTest: green
        DSDeltaCopyTest: green
        DSDeltaFileOutTest: 2 errors (Matthew has commented them, I am not pursuing ICS)
        DSDeltaRevertTest: 19 passes, 6 failures (these we should be able to fix!)
        DSDeltaTiradeTest: green

        DSDeltaChangeSetTest: red, red, red!!! (this is testing the ChangeSet "lookalike" ICS aspect, I am not pursuing ICS so will not fix now)
        DSDeltaTiradeFileOutTest: red, red, red!!! (these I will fix!)

        DSDeltaValidationTest: red, red, red!!! (I need to read up on validation first)
        DSDeltaValidationTestSystemEditor: red, red, red!!! (same here)

NOTE: The Validation tests… I am unsure of, I have not looked at the design and I am unsure if I have broken them or if they were indeed broken. We should take an image and install the DS release from SM and see the test status there.

Step 6

Read some class comments and code. Start with DSDelta and the DSChange hierarchy.

Step 7

Pray. Ask me.

regards, Göran

A basic overview of Web Velocity

Big news from Cincom on the Seaside mailing list today: they've made an evaluation version of their commercial Seaside-based Web Velocity environment available for download. In case you've missed the buzz, Web Velocity takes Seaside running in VisualWorks Smalltalk, adds ActiveRecord integration and a web-based development environment (written in Seaside, of course). If you're curious, head over and download a copy.

Hi,

I am working on the debugger for VisualGST :

imagik.fr

Now you can step, step into, run and inspect the stack.

http://visualgst.bioskop.fr/

Cheers

A look at some pieces of Smalltalk code browser functionality that you may not be aware of

One of the new features of VA Smalltalk are the Tabbed Browsers, mostly a visual visual redo of teh Tabbed Browsers. I like the new look of the Browsers and find most of the new look nicer as well as an improvement in usability. The Browsers look much better now and make navigating the System much [...]

People are often pretty good at walking into a room they are familiar with, and instantly knowing what has changed. That's pretty useful for 3D operations team rooms. But what if things have been “redecorated” — moved around for...