<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> </head> <body> <meta name="Generator" content="Microsoft Word 15 (filtered medium)"> <style></style> <div class="WordSection1"> <p class="MsoNormal"><span lang="CS">Hi Hern</span>an,</p> <p class="MsoNormal">Thanks for your msg. I’m AFK so briefly: At least one critical use of valueEnsured (or [] ensure: aBlock) is in #terminate. We need to make sure the receiver is evaluated even if the process is terminated. Replacing it with #value will show you which test will fail :)</p> <p class="MsoNormal"><o:p> </o:p></p> <p class="MsoNormal">Yes, it may be understood as a mere shortcut as you wrote but I’m thinking it may as well get another semantics, which is: Evaluate the receiver no matter what and return the block’s return value. In terminate I don’t need the return value but in general it may make sense.</p> <p class="MsoNormal"><o:p> </o:p></p> <p class="MsoNormal">Any opinions welcome; although I’m aware this has rather rare use :)</p> <p class="MsoNormal">Thanks again,</p> <p class="MsoNormal">Jaromir</p> <p class="MsoNormal"><o:p> </o:p></p> <div style="mso-element:para-border-div;border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in"> <p class="MsoNormal" style="border:none;padding:0in"><b>From: </b><a href="mailto:hernan.wilkinson@10pines.com">Hernán Wilkinson</a><br> <b>Sent: </b>Monday, February 27, 2023 13:18<br> <b>To: </b><a href="mailto:cuis-dev@lists.cuis.st">Discussion of Cuis Smalltalk</a>; <a href="mailto:martin@hand2mouse.com">Martin McClure</a><br> <b>Cc: </b><a href="mailto:juan@cuis.st">juan@cuis.st</a>; <a href="mailto:mail@jaromir.net"> Jaromir Matas</a><br> <b>Subject: </b>Re: [Cuis-dev] #valueEnsured return value</p> </div> <p class="MsoNormal"><o:p> </o:p></p> </div> <div> <div dir="ltr">hmmm I'm not sure it is a good idea because it goes against the expected return value of #ensure:<br> <div>I mean, #valueEnsured is just a shortcut for [] ensure: [...], and #ensure: returns the return value of evaluating the receiver block, not the parameter block. The receiver block is [] so it should return nil ([] value).</div> <div>Currently it is not returning nil because it is implemented like this:</div> <div>[] ensure: self<br> </div> <div>and it should be:</div> <div>^[] ensure: self</div> <div><br> </div> <div>Now I'm thinking... I do not understand the need for #valueEnsured, why not just send #value to the block? What is the difference?</div> <div>I see that #ensure: sends the message #valueNoContextSwitch instead of #value, why not sending #valueNoContextSwitch instead of #valueEnsured then?</div> <div>I see that #valueEnsured was suggested by <a class="gmail_plusreply" id="plusReplyChip-0" href="mailto:martin@hand2mouse.com" tabindex="-1">@Martin McClure</a> , Martin, could you explain the need for this message? Thank you!!</div> <div><br> </div> <div>And now, because I'm inconsistent (that is, human :-) ), I'm not sure #valueEnsured has to keep the semantics of the return value of #ensure:, it could not if there is a need for what you are suggesting.</div> <div>Anyway, I'd like to understand why #valueEnsured is needed.</div> <div><br> </div> <div>Cheers!</div> <div>Hernan.</div> <div><br> </div> <div><br> </div> </div> <br> <div class="gmail_quote"> <div dir="ltr" class="gmail_attr">On Sun, Feb 26, 2023 at 8:34 AM Jaromir Matas via Cuis-dev <<a href="mailto:cuis-dev@lists.cuis.st">cuis-dev@lists.cuis.st</a>> wrote:<br> </div> <blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"> <div class="msg3878518906851524794"> <div lang="EN-US" style="overflow-wrap: break-word;"> <div class="m_6863252944530188061WordSection1"> <p class="MsoNormal">Hi Juan, all,</p> <p class="MsoNormal"><u></u> <u></u></p> <p class="MsoNormal">I’d expect this example return 1 instead of a block (for general usage); what do you think?</p> <p class="MsoNormal"><u></u> <u></u></p> <p class="MsoNormal">[1] valueEnsured</p> <p class="MsoNormal"><u></u> <u></u></p> <p class="MsoNormal">Enclosed is a suggestion how to make it return 1.</p> <p class="MsoNormal"><u></u> <u></u></p> <p class="MsoNormal">Best,</p> <p class="MsoNormal">Jaromir</p> <p class="MsoNormal"><u></u> <u></u></p> <p class="m_6863252944530188061MsoNoSpacing"><span lang="CS">--</span></p> <p class="m_6863252944530188061MsoNoSpacing"><strong><span style="font-family:"Calibri Light",sans-serif;color:rgb(51,51,51);font-weight:normal">Jaromír Matas</span></strong><span style="font-family:"Calibri Light",sans-serif;color:rgb(85,85,85)"><u></u><u></u></span></p> <p class="m_6863252944530188061MsoNoSpacing"><span style="font-family:"Calibri Light",sans-serif;color:rgb(46,117,182)"><a href="mailto:mail@jaromir.net" target="_blank">mail@jaromir.net</a><u></u><u></u></span></p> <p class="MsoNormal"><span style="color:rgb(143,170,220)"><u></u> <u></u></span></p> <p class="MsoNormal"><u></u> <u></u></p> </div> </div> -- <br> Cuis-dev mailing list<br> <a href="mailto:Cuis-dev@lists.cuis.st" target="_blank">Cuis-dev@lists.cuis.st</a><br> <a href="https://lists.cuis.st/mailman/listinfo/cuis-dev" rel="noreferrer" target="_blank">https://lists.cuis.st/mailman/listinfo/cuis-dev</a><br> </div> </blockquote> </div> <br clear="all"> <div><br> </div> -- <br> <div dir="ltr" class="gmail_signature"> <div dir="ltr"> <div> <div dir="ltr"> <div style="font-size:small"> <div dir="ltr"> <div dir="ltr"> <div style="font-size:12.8px"><span style="font-family:tahoma,sans-serif;font-size:xx-small;border-collapse:collapse"><strong><span style="font-size:8pt"><span style="font-size:small"><font size="2"><span style="font-weight:normal"><span style="font-weight:bold">Hernán Wilkinson</span><br> Agile Software Development, Teaching & Coaching</span></font></span></span></strong></span></div> <div style="font-size:12.8px"><span style="font-family:tahoma,sans-serif;font-size:xx-small;border-collapse:collapse"><strong><span style="font-size:8pt"><span style="font-size:small"><font size="2"><span style="font-weight:normal">Phone: +54-011</span></font></span></span></strong></span><font face="tahoma, sans-serif" size="2">-4893-2057</font></div> <div style="font-size:12.8px"><strong style="font-family:tahoma,sans-serif;font-size:xx-small"><span style="font-size:8pt"><span style="font-size:small"><font size="2"><span style="font-weight:normal">Twitter: @HernanWilkinson</span></font></span></span></strong></div> <div style="font-size:12.8px"><span style="font-family:tahoma,sans-serif;font-size:xx-small;border-collapse:collapse"><strong><span style="font-size:8pt"><span style="font-size:small"><font size="2"><span style="font-weight:normal">site: <a href="http://www.10pines.com/" style="color:rgb(17,65,112)" target="_blank">http://www.10Pines.com</a></span></font></span></span></strong></span></div> <div style="font-size:12.8px"><font face="tahoma, sans-serif"><span style="border-collapse:collapse">Address: Alem 896</span></font>, Floor 6, Buenos Aires, Argentina</div> </div> </div> </div> </div> </div> </div> </div> </div> </body> </html>