(I wasn't suggesting you as a first-time J user, but a first-time user
of dissect and its labs.)
Do you think it would be sufficient to put () around J symbols? We did
that in some places but not all. What about for names like u, v, and y?
The sentence (+/ y) takes the sum of items of (y).
-or-
The sentence ((+/ y)) takes the sum of items of ((y)).
-or-
The sentence {+/y} takes the sum of items of {y}.
-or-
The sentence
+/y
takes the sum of items of y.
(This last form doesn't work when the J words are at the beginning or
end of the sentence)
Henry Rich
On 3/5/2015 5:40 AM, Björn Helgason wrote:
Wellll...
I am not sure how well I qualify as a first time user.
I do try to put my eyes on issues for newcomers.
As always J symbols can not well mix with ordinary speach so one thing to
note is to not place J sentences nor parts there of in a line with
something else.
. after a J sentence can change the J sentences meaning and at least
confuse the newcomer even if the . is preceded by a space.
) can also be a problem.
I had an older version of the lab and there the line wrap caused some
confusion because the 2) item came at the end of a line and looked like it
belonged to the J sentence.
In general I think the howering texts are absolutely wonderful and explain
the dissects nicely.
The colouring is also great!
This lab has brought a whole new level of ease to I would rather say to
people who have made their way into J after taking the first steps rather
than newcomers.
It makes sence to glance at least through J for C programmers first read
the labs and then read J for C again.
As for my self I enjoyed stepping through the labs and I like all the
multiple options and visualization it brings.
I can not believe the amount of work, patience and care that has been put
into this and I can not wait to take a peek behind the code used to do this
magic.
On 4 Mar 2015 23:21, "Henry Rich" <[email protected]> wrote:
If you're going to go through the labs in detail, we would much appreciate
any comments you have about how they can be made easier for a first-time
user.
Also, use Package Manager every now and again to check for a new version -
we are adding sections and fixing wording.
Henry Rich
On 3/4/2015 9:26 AM, Björn Helgason wrote:
I like this dissect addon and labs.
At the end of dissect II lab I sometimes get stack error trying to play
with the debug
Dissect lab II
── ((7) 11 of 11) Assignment statements ─────────────────────
Did you notice anything unusual in the Dissect displays as
you were single-stepping through the program?
When Dissect is called from the debugger, assignment
statements are ignored. The Dissect display is informational
only. The dissected line will be executed when the program
resumes. Therefore, side-effects such as assignments should
be avoided.
Side-effects in verbs called by your sentence cannot be
avoided; you should avoid dissecting lines that have
side-effects.
)
|stack error: run1
|[-1]
|stack error
|stack error
|stack error
|stack error
If I ignore the steps etc in debug the lab finishes fine.
It looks like debug is getting better but it is not quite failfree for
ignorant people like me.
This dissect stuff will keep me busy for a while I guess I have to run the
labs over a few times.
I am pretty sure it will help a lot of people understand J execution
better.
It is quite nice to get to study the examples more slowly than just to
quickly glance through the whole thing.
It is easy to miss some of the features.
I hope I will be better at managing the debug now.
2015-03-03 9:12 GMT+00:00 Björn Helgason <[email protected]>:
This is great!!
I put a fairly complicated sentence with a hook into dissect and the
display is nice and then the explanation on pointing at elemnents quite
inomative andgood
Have not had time to go through the labs yet but intending to shortly.
Look forward testing/using this and finally getting a good debug in J I
can use and understand.
On 2 Mar 2015 01:13, "Henry Rich" <[email protected]> wrote:
Version 3.7 of the Dissect addon is released, for j6.02 and J8.03+.
Dissect aims to be the easiest-to-use and most complete tool for
learning
J and debugging J sentences, and I think this version is a big step in
that
direction. Check it out if you haven't yet.
This release has:
* Tutorial labs to help you learn dissect (thanks to David Steele for
writing these). If you're not a J guru, you might learn some J too.
* Built-in help, with tooltips for all the display components, so you
can
hover over blocks and see what they mean.
* Integration into the J8 debugger so that you can press a button to
dissect the sentence the debugger has stopped on. There's also an
Autodissect Mode so that as you step through a verb, every sentence is
dissected automatically before it is executed.
IMPORTANT: When you get the new debug/dissect from Package Manager, make
sure you also get the latest versions of labs/labs, ide/qt, and the Base
Library.
The Labs will run on J6.02, they're just not released for that platform,
so if you're still on 6.02 you can download them on J8.03 and copy to
your
Labs directory.
Henry Rich
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