On 14/5/14 14:25, PBK Research wrote:
Stephan
Thanks for the comment. I understand the point about development and things
not always being in step. But if you look at it from my point of view, I am
an elderly retired statistician who does programming for fun,
you interest me :)
I would love to get a nice statistic library for Pharo and to improve
the SciTalk
math library.
I am not an
expert in development and I am pretty new to Pharo. It all looks a maze of
new terminology to me - I don't understand the difference between Monticello
and Metacello, for instance. I am sure to an expert your explanation of how
to check the correct version of Magritte3 is quite straightforward, but I
would never have found my way to that conclusion myself. As I pointed out to
Esteban, I used the configuration browser on 5 May to get the stable version
of Magritte3. If that was already out of date, I am pretty well lost.
Still, I am making progress with my original aim of learning about Magritte,
and there are many helpful people on this group, so you can just regard this
as me blowing off steam after things had not gone completely easily.
Peter Kenny
-----Original Message-----
From: Pharo-users [mailto:pharo-users-boun...@lists.pharo.org] On Behalf Of
Stephan Eggermont
Sent: 14 May 2014 12:58
To: pharo-users@lists.pharo.org
Subject: Re: [Pharo-users] Problem learning about Magritte
Peter wrote:
Thanks. I have Magritte-Morph in my image, but I wonder if anyone has
debugged it. I send asMagritteMorph to a Magritte description and I get a
MAContainerMorph, which is OK. Try sending openInWorld to this, and it
falls
over in MADescriptionMorph>>buildMorph, which calls
MADescriptionMorph>>rectangleMorph, which tries to create an instance of
the
non-existent class RectangleMorph.
Hmm, that looks like you have an old version of Magritte-Morph loaded.
If you open the Monticello browser, you can select the Magritte-Morph
package and then open its repository to see if there is a newer version.
If you select a newer version and click Changes, you can see if this
newer version is likely to solve your problem (it is).
If you take a look at the ConfigurationOfMagritte3, you can see what
goes wrong. version32 is the first one referring to a Magritte-Morph
newer than version 70. stable: installs version311 however. So
ConfigurationOfMagritte3 needs a new stable version. (Done)
I have tried to trace this back, and it is true that my original Pharo 3.0
image, downloaded on 30 Apr 2014, does not have the class RectangleMorph. I
have looked at older images, and the class exists. Maybe my mistake was to
try to use the Pharo 3.0 image the day it was announced. Perhaps I would be
better off using one of the pre-packed images you mention.
Pharo 3 has lots of improvements and clean-ups. RectangleMorph behavior
was folded back into BorderedMorph. The projects running on top of Pharo
have different ideas of what should be stable and what development
versions. The people developing them mostly use development releases
or specific versions. If there are not a lot of non-developing users the
stable version
tends to lag behind. And if the specific problem is not in the tests, CI
will not
break.
Just before the release, there are lots of fixes and the image changes fast.
Not all projects will be able to synchronize fast, and have sufficient trust
to declare a new version stable. So just after a release, you might have to
use
a lot of development versions, check repositories and ask questions on
the mailing lists. Please do, that is the only way we can improve.
My only worry is that there is a list of dozens of contributions on
https://ci.inria.fr/pharo-contribution/, and unless you have far more
knowledge than I have it is impossible to know which might be helpful. For
now I will follow your hint and use the Forum image.
That's a helpful comment. Thank you. We should improve the project
descriptions (at least I should for mine).
Stephan
