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		<id>http://wiki.erights.org/mediawiki/index.php?action=history&amp;feed=atom&amp;title=Parallel_iteration</id>
		<title>Parallel iteration - Revision history</title>
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		<updated>2026-04-23T10:47:42Z</updated>
		<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>http://wiki.erights.org/mediawiki/index.php?title=Parallel_iteration&amp;diff=1752&amp;oldid=prev</id>
		<title>Kevin Reid:&amp;#32;whoops, category link</title>
		<link rel="alternate" type="text/html" href="http://wiki.erights.org/mediawiki/index.php?title=Parallel_iteration&amp;diff=1752&amp;oldid=prev"/>
				<updated>2009-02-24T20:59:44Z</updated>
		
		<summary type="html">&lt;p&gt;whoops, category link&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;There is no nice way to iterate over two collections in parallel, or correspondingly to write a generic &amp;quot;zip&amp;quot;, since the existing protocol [[:Category:Message iterate/1|iterate/1]] is internal iteration.&lt;br /&gt;
&lt;br /&gt;
==Proposals==&lt;br /&gt;
&lt;br /&gt;
* Give all collections an operation to create EIO [[InStream]]s from them. This is basically external iteration. --[[User:Kevin Reid|Kevin Reid]] 14:58, 24 February 2009 (CST)&lt;br /&gt;
&lt;br /&gt;
* Give all collections an operation to create functional streams (lazy lists) from them. --[[User:Kevin Reid|Kevin Reid]] 14:58, 24 February 2009 (CST)&lt;br /&gt;
&lt;br /&gt;
==Discussion==&lt;br /&gt;
&lt;br /&gt;
[[User:Kevin Reid]] and [[User:Markm]] have discussed this but not in text. XXX Kevin should write up the EIO/Dividoid plan and how the functional-stream option ties into this.&lt;br /&gt;
&lt;br /&gt;
[[Category:Unresolved design issues]]&lt;/div&gt;</summary>
		<author><name>Kevin Reid</name></author>	</entry>

	<entry>
		<id>http://wiki.erights.org/mediawiki/index.php?title=Parallel_iteration&amp;diff=3834&amp;oldid=prev</id>
		<title>Kevin Reid:&amp;#32;new design ssue</title>
		<link rel="alternate" type="text/html" href="http://wiki.erights.org/mediawiki/index.php?title=Parallel_iteration&amp;diff=3834&amp;oldid=prev"/>
				<updated>2009-02-24T20:58:25Z</updated>
		
		<summary type="html">&lt;p&gt;new design ssue&lt;/p&gt;

		&lt;table style=&quot;background-color: white; color:black;&quot;&gt;
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		&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;←Older revision&lt;/td&gt;
		&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;Revision as of 20:58, 24 February 2009&lt;/td&gt;
		&lt;/tr&gt;
		&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;-&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;There is no nice way to iterate over two collections in parallel, or correspondingly to write a generic &amp;quot;zip&amp;quot;, since the existing protocol [[&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;:&lt;/del&gt;Category:Message iterate/1|iterate/1]] is internal iteration.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;There is no nice way to iterate over two collections in parallel, or correspondingly to write a generic &amp;quot;zip&amp;quot;, since the existing protocol [[Category:Message iterate/1|iterate/1]] is internal iteration.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;==Proposals==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;==Proposals==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;!-- diff generator: internal 2026-04-23 10:47:43 --&gt;
&lt;/table&gt;</summary>
		<author><name>Kevin Reid</name></author>	</entry>

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