<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> </head> <body> <div class="moz-cite-prefix">On 8/19/21 5:58 PM, Juan Vuletich via Cuis-dev wrote: </div> <blockquote type="cite" cite="mid:611E7F96.1090901@jvuletich.org"> <meta content="text/html; charset=UTF-8" http-equiv="Content-Type"> On 8/14/2021 2:24 PM, Nicola Mingotti via Cuis-dev wrote: <blockquote cite="mid:df6137c9-8639-fcb7-11c9-2a13eeb71b41@gmail.com" type="cite"> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> Hi guys, I signal you that ReferenceStream class documentation is outdated, the example it suggests fails. ----- rr _ ReferenceStream fileNamed: 'test.obj'. rr nextPut: <your object>. rr close. ----- I changed a bit the doc and added 2 convenience methods that can be useful. ---------- Example myObj _ {123. #('foo' 'bar' #(11 23 45)). }. ReferenceStream dumpOnFile: ('test1.obj' asFileEntry) object: myObj . myObj _ nil. myObj _ ReferenceStream restoreFromFile: ('test1.obj' asFileEntry ). myObj print. "=> #(123 #('foo' 'bar' #(11 23 45))) " ---------- I ask myself. Dump and restore are extremely useful methods. Shouldn't we add these methods to Object itself ? [ Maybe they are already there;P and I didn't see. ] bye Nicola </blockquote> Hi Nicola, I just pushed this to GitHub. Note that I slightly modified the code, using safer methods for file streams, that ensure: closing the files. WRT adding helpers to Object, I feel that Object is already too bloated. It is even more so in Squeak and other dialects. I wouldn't add more stuff to Object unless absolutely needed. Thanks, <pre class="moz-signature" cols="72">-- Juan Vuletich </pre> </blockquote> Ok Juan, thanks. during the long Debian upgrade i red almost all the chapter 6-Objects of Lalonde book vol-1. i learnt Object has already "printOn:", so it actually has already dump/restore capabilities. It is not "circle-safe" but that is another story. No need to add more methods, agreed. The basic capability is there. bye Nicola </body> </html>