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Arrays as Object Properties - Revision history
2026-09-23T23:56:45Z
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Andrew Branscom at 21:10, 28 April 2025
2025-04-28T21:10:00Z
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Andrew Branscom
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Andrew Branscom: 1 revision imported
2025-04-26T22:29:01Z
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Andrew Branscom
http://wiki.sierrahelp.com/index.php?title=Arrays_as_Object_Properties&diff=92574&oldid=prev
Andrew Branscom at 00:20, 19 June 2022
2022-06-19T00:20:51Z
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<p><b>New page</b></p><div>[[Category:SCI Pages]]<br />
[[Category:Temp SCI Pages]]<br />
According to '''[[Lars Skovlund]]''':<br />
<br />
<blockquote><br />
"There is no way to do what you ask. That's part of the reason why they had to introduce the Memory call in SCI01 (but that's an ugly solution to the problem.<br />
There is a hack that you can use, however. Declare a single local variable followed by the arrays you need. Then you can (at least from the point of view of the PMachine, not sure about Brian's compiler) index into the large arrays by addressing the lone local variable and using a bit of arithmetic."<br />
</blockquote><br />
<br />
<blockquote><br />
<div class="CodeBlockHeader">Code:</div><br />
<syntaxhighlight lang="sci"><br />
(local<br />
baseVar<br />
array1[10]<br />
array2[10]<br />
)<br />
<br />
(instance Blah of Obj<br />
(properties<br />
arrayPos 1<br />
)<br />
)<br />
<br />
(instance Blarg of Obj<br />
(properties<br />
arrayPos 11<br />
)<br />
)<br />
</syntaxhighlight><br />
</blockquote><br />
<br />
&nbsp;<br />
<br />
To access the array, you use a reference like:<br />
<div class="CodeBlockHeader">Code:</div><br />
<syntaxhighlight lang="sci"><br />
baseVar[(Blah:arrayPos)] // Gets the 1st value from array1<br />
baseVar[(Blarg:arrayPos)] // Get the 1st value from array2<br />
<br />
baseVar[+ (Blah:arrayPos) 1] // Gets the 2nd value from array1<br />
baseVar[+ (Blarg:arrayPos) 1] // Get the 2nd value from array2<br />
</syntaxhighlight><br />
<br />
&nbsp;<br />
<br />
[[Category:Examples]]<br />
[[Category:Syntax]]</div>
Andrew Branscom