<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> </head> <body text="#000000" bgcolor="#FFFFFF"> Hi Joseph, I added details to the solution of the exercise 4.9: <a class="moz-txt-link-freetext" href="https://cuis-smalltalk.github.io/TheCuisBook/The-Collection-Way-of-Life-_0028Solutions_0029.html">https://cuis-smalltalk.github.io/TheCuisBook/The-Collection-Way-of-Life-_0028Solutions_0029.html</a> The preface now points to the Spacewar! package: <a class="moz-txt-link-freetext" href="https://cuis-smalltalk.github.io/TheCuisBook/Preface.html#DOCF2">https://cuis-smalltalk.github.io/TheCuisBook/Preface.html#DOCF2</a> Thanks for your feedbacks Hilaire <div class="moz-cite-prefix">Le 18/07/2021 à 22:31, Hilaire Fernandes a écrit : </div> <blockquote type="cite" cite="mid:e6b95346-1ad2-cb93-8050-d42b7f69bd2a@drgeo.eu"> Thanks for the feedback. I will add details Hilaire <div class="moz-cite-prefix">Le 17/07/2021 à 03:06, Joseph Turco a écrit : </div> <blockquote type="cite" cite="mid:gGKn36rEfjj7I7cLhC_-37X9F90aVDJWkBfUxzauY7EKCe387-wl-Syv9fN73-dkgiNG1Cmqg2YATCkZcM2MHYuEpFBoDqQjIFpVByp-dPc=@protonmail.com"> You mentioned about me looking for anything in the book, and I do have one thing to mention. Some of the exercises are kinda difficult and I've had to goto the solution. Most of them made sense after looking at the solution, but some of them I don't understand. For example. Exercise 4.9 ($A to: $Z) collect [:c | (c asciiValue - 65 + 3 \\ 26 + 65) asCharacter] . I have no clue how that math calculation works at all. </blockquote> </blockquote> <pre class="moz-signature" cols="72">-- GNU Dr. Geo <a class="moz-txt-link-freetext" href="http://drgeo.eu">http://drgeo.eu</a> <a class="moz-txt-link-freetext" href="http://blog.drgeo.eu">http://blog.drgeo.eu</a></pre> </body> </html>