<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div dir="ltr"><br></div><div dir="ltr"><br><blockquote type="cite">On Nov 24, 2022, at 11:15 AM, Taeumel, Marcel <Marcel.Taeumel@hpi.de> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr">
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Hehe. Of course you do. 😉 I just wanted to highlight the fact that nil is no domain object. Exceptional usage should be done by intention. In general, ifNil checks interfere with readability of domain logic. Still, I see no harm in such ifNil checks. Who would
agree on a domain-specific symbol for start anyway 😅</div></blockquote><div><br></div><br><div dir="ltr">😅 <3</div><br><blockquote type="cite"><div dir="ltr"><hr style="display:inline-block;width:98%" tabindex="-1">
<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Squeak-dev <squeak-dev-bounces@lists.squeakfoundation.org> on behalf of Eliot Miranda <eliot.miranda@gmail.com><br>
<b>Sent:</b> Thursday, November 24, 2022 7:53:35 PM<br>
<b>To:</b> The general-purpose Squeak developers list <squeak-dev@lists.squeakfoundation.org><br>
<b>Subject:</b> Re: [squeak-dev] The Trunk: Compiler-eem.480.mcz</font>
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<div dir="auto">Hi Marcel,
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<blockquote type="cite">On Nov 24, 2022, at 1:03 AM, Marcel Taeumel <marcel.taeumel@hpi.de> wrote:<br>
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+1 Even for a loop-based algorithm, clarity would improve if the initial case would be flagged with a symbol, not nil:
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<div>x := #start.</div>
<div>[ ... ] whileTrue: [</div>
<div> x = #start ifTrue: [x := ... ].</div>
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Please don’t take this personally; I find the above pretentious in the extreme, and, given how much thought Smalltalk-80’s designers gave to initializing with nil (again it’s in the blue book), displaying and/or celebrating ignorance. So -1,000.
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<div>Best,</div>
<div>Marcel</div>
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<p style="color:#AAAAAA; margin-top:10px">Am 23.11.2022 21:23:27 schrieb Tobias Pape <das.linux@gmx.de>:</p>
<div style="font-family:Arial,Helvetica,sans-serif">Yet, nil is only seldom a good domain object.<br>
-t<br>
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> On 23. Nov 2022, at 19:34, tim Rowledge wrote:<br>
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> I won't quote it all again but what Eliot wrote is important. There are good solid reasons why Smalltalk has a rigorously defined UndefinedObject. We demand rigorously defined areas of doubt and uncertainty!<br>
> <br>
> tim<br>
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