I think I found another bug in the book.I am using the Safari version, and the code in the text doesn't match the screenshot.For example, the text says:""The rendered code in the Safari version gets an error, whereas the screenshot version works: -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

Very well spotted! Thank you very much! Added here: https://github.com/Apress/agile-ai-in-pharo/issues/6 I will fix in the second edition. Even if all the code contained in the book is automatically tested, in this case, this was not enough. Thank you! Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. > On 21-08-2020, at 02:07, bentai <bentaisan@gmail.com> wrote: > > I think I found another bug in the book. I am using the Safari version, and the code in the text doesn't match the screenshot. For example, the text says: > somePoints := OrderedCollection new. > 500 timesRepeat: [ somePoints add: {(50 atRandom - 25) . (50 atRandom - 25)}]. > f := [ :x | (-2 * x) - 3 ]. > "We use the Roassal Grapher engine to plot our points" > g := RTGrapher new. > d := RTData new. > d dotShape color: [ :p | (p second > (f value: p first)) ifTrue: [ Color red trans ] ifFalse: [ Color blue trans ] ]. > d points: somePoints. > d x: #first. > d y: #second. > g add: d. > g > "" The rendered code in the Safari version gets an error, whereas the screenshot version works: > f := [ :x | (-2 * x) - 3 ]. > > somePoints := OrderedCollection new. > 500 timesRepeat: [ somePoints add: (( 50 atRandom - 25 ) @ ( 50 atRandom - 25 )) ]. > > g := RTGrapher new. > d := RTData new. > d dotShape color: [ :p | (p y > (f value: p x)) ifTrue: [ Color red trans ] ifFalse: [ Color blue trans ] ]. > d points: somePoints. > d x: #x. > d y: #y. > g add: d. > g > ----------------------------------------------------------------------------------- > > This may be part of the cause of my bug report on Git, e.g. there is a mismatch between the eBook version, the printed version and the Safari/OReilly version. > > It is Pharo 7.0.4, but I don't know if that matters in this case. > > I apologize for not following the procedure of cloning the github repository and creating bug request from there with pull requests, but I am still working out the configuration of Iceberg. > > Cheers, > Tom Sturgeon > > Sent from the Pharo Smalltalk Users mailing list archive <http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html> at Nabble.com.