Re: [3.8a-6665Full] Some Issues I've found with 'A Gentle Introduction to Smalltalk' in 3.8a-6665Full
If you put a period after the block, then you don't get the error. I'm just learning myself though.
Don
Ken G. Brown(w) wrote:
Oops, that should have been 6665 not 6655... Corrected. Ken
Downloaded 3.8a-6665Full from http://www.squeak.org/download/index.html
During initial exploration from the point of view of a new user, I found the following issues:
On the page for Block Closures (ii) in the tutorial 'A Gentle Introduction to Smalltalk', by Stephane Ducasse & Serge Stinckwich, I selected the following code that was displayed: -- b1 := [:name| (SampledSound soundNamed: name) play]
b1 value: #croak. b1 value: #scratch. b1 value: #chirp. b1 value: #splash. b1 value: #coyote. b1 value: #silence. -- and tried a do-it but got an error 'Unknown variable: b1, please correct or cancel' with the choices declare temp or declare instance. I selected declare temp and got an error 'Message not understood: Block Context>>b1', and the code text display was messed up. I abandoned the notifier and selected the messed up text which cleaned up the text display, showing a |b1| added before the code but in a different plain style. I tried undo but it would not undo. Now the tutorial is modified and I cannot go back without quitting with no saving.
I copied the same code into a workspace which pasted into the workspace in the same bold style, a do-it of the whole thing got the same error. A subsequent do-it of: b1 value: #croak. got a croaking sound.
A do-it of: b1 value: #coyote. got the sound of an owl. b1 value: #splash. got the sound of a closing drawer or some such thing.
Typing the underscore in the workspace in the pasted bold style, did not result in the left arrow.
Hope this helps.
Ken
Or only execute the block, then the lack of a period at the end won't matter. The authors probably should make this clearer. If you do it the way I sugest, then you can also do an inspect of the object created to see what it looks like inside. That can help with the understanding of the processes taking place.
At 06:35 PM 7/5/2005 -0700, kbrown wrote:
If you put a period after the block, then you don't get the error. I'm just learning myself though.
Don
Ken G. Brown(w) wrote:
Oops, that should have been 6665 not 6655... Corrected. Ken
Downloaded 3.8a-6665Full from http://www.squeak.org/download/index.html
During initial exploration from the point of view of a new user, I found the following issues:
On the page for Block Closures (ii) in the tutorial 'A Gentle Introduction to Smalltalk', by Stephane Ducasse & Serge Stinckwich, I selected the following code that was displayed: -- b1 := [:name| (SampledSound soundNamed: name) play]
b1 value: #croak. b1 value: #scratch. b1 value: #chirp. b1 value: #splash. b1 value: #coyote. b1 value: #silence. -- and tried a do-it but got an error 'Unknown variable: b1, please correct or cancel' with the choices declare temp or declare instance. I selected declare temp and got an error 'Message not understood: Block Context>>b1', and the code text display was messed up. I abandoned the notifier and selected the messed up text which cleaned up the text display, showing a |b1| added before the code but in a different plain style. I tried undo but it would not undo. Now the tutorial is modified and I cannot go back without quitting with no saving.
I copied the same code into a workspace which pasted into the workspace in the same bold style, a do-it of the whole thing got the same error. A subsequent do-it of: b1 value: #croak. got a croaking sound.
A do-it of: b1 value: #coyote. got the sound of an owl. b1 value: #splash. got the sound of a closing drawer or some such thing. Typing the underscore in the workspace in the pasted bold style, did not result in the left arrow.
Hope this helps.
Ken
squeak-dev@lists.squeakfoundation.org
-
Don McLane -
John Pfersich