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> <span style="font-family: Calibri, Helvetica, sans-serif;font-size: 16px">The decimal representation is just one of many equivalent representations.</span><div><span style="font-family: Calibri, Helvetica, sans-serif;font-size: 16px"><br></span></div><div><span style="font-family: Calibri, Helvetica, sans-serif"><span style="font-size: 16px">The problem being that the basic (machine) representation is not clear. I think its 2's complement. HEX and OCT -- I suppose -- are very close to the machine representation.</span></span></div><div><span style="font-family: Calibri, Helvetica, sans-serif"><span style="font-size: 16px"><br></span></span></div><div><span style="font-family: Calibri, Helvetica, sans-serif"><span style="font-size: 16px">That's not an issue for positive numbers. :-) </span></span></div><div><span style="font-family: Calibri, Helvetica, sans-serif"><span style="font-size: 16px"><br></span></span></div><div><span style="font-family: Calibri, Helvetica, sans-serif"><span style="font-size: 16px">Best,</span></span></div><div><span style="font-family: Calibri, Helvetica, sans-serif"><span style="font-size: 16px">Marcel</span></span></div><div class="mb_sig"></div>
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<p style="color: #AAAAAA; margin-top: 10px;">Am 17.05.2021 14:00:36 schrieb Thiede, Christoph <christoph.thiede@student.hpi.uni-potsdam.de>:</p><div style="font-family:Arial,Helvetica,sans-serif">
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<p>> <span style="font-size: 12pt">> But this would not really match the actual object layout of integers in Squeak which can have arbitrary sizes ...</span></p>
<div>> </div>
<div>> So, the binary representation does not make sense, right? And neither does the HEX or OCT. :-)</div>
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<div>Why do you think so? The object layout of Squeak Integer is not something like "list of decimal digits". The decimal representation is just one of many equivalent representations. On the other hand, any complement semantic adds a completely new concept
because it neglects the infinite size of integers.</div>
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<div>Best,</div>
<div>Christoph</div>
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<div id="divRplyFwdMsg" dir="ltr"><span style="font-family: Calibri, sans-serif;color: #000000"><b>Von:</b> Squeak-dev <squeak-dev-bounces@lists.squeakfoundation.org> im Auftrag von Taeumel, Marcel<br>
<b>Gesendet:</b> Montag, 17. Mai 2021 13:08:47<br>
<b>An:</b> squeak-dev<br>
<b>Betreff:</b> Re: [squeak-dev] The Trunk: Morphic-mt.1769.mcz</span>
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> <span style="font-family: Calibri, Helvetica, sans-serif;font-size: 16px">But this would not really match the actual object layout of integers in Squeak which can have arbitrary sizes ...</span>
<div><span style="font-family: Calibri, Helvetica, sans-serif;font-size: 16px"><br>
</span></div>
<div><span style="font-family: Calibri, Helvetica, sans-serif;font-size: 16px">So, the binary representation does not make sense, right? And neither does the HEX or OCT. :-)</span></div>
<div><span style="font-family: Calibri, Helvetica, sans-serif;font-size: 16px"><br>
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<div><span style="font-family: Calibri, Helvetica, sans-serif;font-size: 16px">Best,</span></div>
<div><span style="font-family: Calibri, Helvetica, sans-serif;font-size: 16px">Marcel</span></div>
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<p style="color: #AAAAAA; margin-top: 10px;">Am 17.05.2021 13:07:28 schrieb Thiede, Christoph <christoph.thiede@student.hpi.uni-potsdam.de>:</p>
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<p>> <span>And I would have expected a 2's complement, right?</span></p>
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</span></p>
<p><span>Ah, now I see. :-) But this would not really match the actual object layout of integers in Squeak which can have arbitrary sizes ...</span></p>
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</span></p>
<p><span>In my opinion, we should just leave it as is (just maybe without the space), I don't really like such artificial limitations. :-)</span></p>
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<p><span>Best,</span></p>
<p><span>Christoph</span></p>
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<div id="divRplyFwdMsg" dir="ltr"><span style="font-family: Calibri, sans-serif;color: #000000"><b>Von:</b> Squeak-dev <squeak-dev-bounces@lists.squeakfoundation.org> im Auftrag von Taeumel, Marcel<br>
<b>Gesendet:</b> Montag, 17. Mai 2021 12:52:23<br>
<b>An:</b> squeak-dev<br>
<b>Betreff:</b> Re: [squeak-dev] The Trunk: Morphic-mt.1769.mcz</span>
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> <span style="font-family: Calibri, Arial, Helvetica, sans-serif;font-size: 16px">Apart from that, I would have expected '-02' instead of '- 02'. :-)</span>
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<div><span style="font-family: Calibri, Arial, Helvetica, sans-serif;font-size: 16px">And I would have expected a 2's complement, right? Or even drop this representation for negative numbers altogether?</span></div>
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<div><span style="font-family: Calibri, Arial, Helvetica, sans-serif;font-size: 16px">Best,</span></div>
<div><span style="font-family: Calibri, Arial, Helvetica, sans-serif;font-size: 16px">Marcel</span></div>
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<p style="color: #AAAAAA; margin-top: 10px;">Am 17.05.2021 12:49:51 schrieb Thiede, Christoph <christoph.thiede@student.hpi.uni-potsdam.de>:</p>
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<p>Nice catch! :-)</p>
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<p>For anyone else wondering about this glitch:</p>
<p>Before:</p>
<p><img size="8037" id="x_img168171" tabindex="0" style="max-width:99.9%" src="cid:fa526f81-7fe1-4dca-8487-be1c5bc0731b"></img><!-- </img> --><!-- </img> --><br>
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<div class="x__rp_T4" id="x_Item.MessagePartBody">After:<br>
<img size="7983" id="x_img364038" tabindex="0" style="max-width:99.9%" src="cid:3b6aa025-5213-4b7a-80f9-d3ae74dbbfe9"></img><!-- </img> --><!-- </img> --><br>
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<div class="x__rp_T4" id="x_Item.MessagePartBody">IMO our printing protocol on Number should have a padded argument similar to the (post-comma) decimal places.</div>
<div class="x__rp_T4" id="x_Item.MessagePartBody"><span style="font-size: 12pt">Apart from that, I would have expected '-02' instead of '- 02'. :-)</span><br>
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<div class="x__rp_T4" id="x_Item.MessagePartBody"><span style="font-size: 12pt">Best,</span></div>
<div class="x__rp_T4" id="x_Item.MessagePartBody"><span style="font-size: 12pt">Christoph</span></div>
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<div id="x_divRplyFwdMsg" dir="ltr"><span style="font-family: Calibri, sans-serif;color: #000000"><b>Von:</b> Squeak-dev <squeak-dev-bounces@lists.squeakfoundation.org> im Auftrag von commits@source.squeak.org <commits@source.squeak.org><br>
<b>Gesendet:</b> Donnerstag, 6. Mai 2021 19:05:29<br>
<b>An:</b> squeak-dev@lists.squeakfoundation.org; packages@lists.squeakfoundation.org<br>
<b>Betreff:</b> [squeak-dev] The Trunk: Morphic-mt.1769.mcz</span>
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<div class="PlainText">Marcel Taeumel uploaded a new version of Morphic to project The Trunk:<br>
<a href="http://source.squeak.org/trunk/Morphic-mt.1769.mcz">http://source.squeak.org/trunk/Morphic-mt.1769.mcz</a><br>
<br>
==================== Summary ====================<br>
<br>
Name: Morphic-mt.1769<br>
Author: mt<br>
Time: 6 May 2021, 7:05:24.828981 pm<br>
UUID: 8109f744-f1f3-7048-8646-fed21a8e23d4<br>
Ancestors: Morphic-ct.1768<br>
<br>
Fixes minor glitch in objext explorers on integers.<br>
<br>
This makes me wonder ... what are the expectations for negative integers here?<br>
<br>
=============== Diff against Morphic-ct.1768 ===============<br>
<br>
Item was changed:<br>
----- Method: Integer>>explorerContents (in category '*Morphic-Explorer') -----<br>
explorerContents<br>
<br>
^#(<br>
('hexadecimal' 16 2)<br>
('octal' 8 3)<br>
('binary' 2 4)) collect: [ :each | | label group |<br>
group := each third.<br>
+ label := self abs printStringBase: each second.<br>
- label := self printStringBase: each second.<br>
label := label padded: #left to: (label size roundUpTo: group) with: $0.<br>
label := String streamContents: [:s |<br>
+ self negative ifTrue: [s nextPutAll: '- '].<br>
(1 to: label size by: group)<br>
do: [:index |<br>
1 to: group do: [:gIndex |<br>
s nextPut: (label at: index + gIndex - 1)]]<br>
separatedBy: [s space]].<br>
<br>
ObjectExplorerWrapper<br>
with: label<br>
name: each first translated<br>
model: self ]!<br>
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