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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
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<title>Castle Game Engine: CastleGenericLists: Class TGenericStructList</title>
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<h2>Castle Game Engine</h2><p><a href="introduction.html" class="navigation">Introduction</a></p><p><a href="AllUnits.html" class="navigation">Units</a></p><p><a href="ClassHierarchy.html" class="navigation">Class Hierarchy</a></p><p><a href="AllClasses.html" class="navigation">Classes, Interfaces, Objects and Records</a></p><p><a href="AllTypes.html" class="navigation">Types</a></p><p><a href="AllVariables.html" class="navigation">Variables</a></p><p><a href="AllConstants.html" class="navigation">Constants</a></p><p><a href="AllFunctions.html" class="navigation">Functions and Procedures</a></p><p><a href="AllIdentifiers.html" class="navigation">Identifiers</a></p></td><td class="content">
<a name="TGenericStructList"></a><h1 class="cio">Class TGenericStructList</h1>
<table class="sections wide_list">
<tr>
<td><a class="section" href="#PasDoc-Description">Description</a></td><td><a class="section" href="#PasDoc-Hierarchy">Hierarchy</a></td><td><a class="section" href="#PasDoc-InternalTypes">Internal Types</a></td><td><a class="section" href="#PasDoc-Fields">Fields</a></td><td><a class="section" href="#PasDoc-Methods">Methods</a></td><td><a class="section" href="#PasDoc-Properties">Properties</a></td></tr></table>
<a name="PasDoc-Description"></a><h2 class="unit">Unit</h2>
<p class="unitlink">
<a href="CastleGenericLists.html">CastleGenericLists</a></p>
<h2 class="declaration">Declaration</h2>
<p class="declaration">
<code>type generic TGenericStructList<T> = class(TFPSList)</code></p>
<h2 class="description">Description</h2>
<p>
Generic list of types that are compared by CompareByte.
<p>This is equivalent to TFPGList, except it doesn't override <a class="normal" href="CastleGenericLists.TGenericStructList.html#IndexOf">IndexOf</a>, so your type doesn't need to have a "=" operator built-in inside FPC. When calling <a class="normal" href="CastleGenericLists.TGenericStructList.html#IndexOf">IndexOf</a> or Remove, it will simply compare values using CompareByte, this is what TFPSList.IndexOf uses. This way it works to create lists of records, vectors (constant size arrays), old-style TP objects, and also is suitable to create a list of methods (since for methods, the "=" is broken, for Delphi compatibility, see <a href="http://bugs.freepascal.org/view.php?id=9228">http://bugs.freepascal.org/view.php?id=9228</a>).
<p>We also add some trivial helper methods like <a class="normal" href="CastleGenericLists.TGenericStructList.html#Add">Add</a> and <a class="normal" href="CastleGenericLists.TGenericStructList.html#L">L</a>.</p>
<a name="PasDoc-Hierarchy"></a><h2 class="hierarchy">Hierarchy</h2>
<ul class="hierarchy"><li class="ancestor">TFPSList</li>
<li class="thisitem">TGenericStructList</li></ul><h2 class="overview">Overview</h2>
<a name="PasDoc-InternalTypes"></a><h3 class="summary">Internal Types</h3>
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<td class="visibility"><a href="legend.html"><img src="published.gif" alt="Published" title="Published"></a></td>
<td class="itemcode"><code><b><a href="CastleGenericLists.TGenericStructList.html#TCompareFunc">TCompareFunc</a></b> = function(const Item1, Item2: T): Integer;</code></td>
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</table>
<a name="PasDoc-Fields"></a><h3 class="summary">Fields</h3>
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<td class="visibility"><a href="legend.html"><img src="protected.gif" alt="Protected" title="Protected"></a></td>
<td class="itemcode"><code>var <b><a href="CastleGenericLists.TGenericStructList.html#FOnCompare">FOnCompare</a></b>: <a href="CastleGenericLists.TGenericStructList.html#TCompareFunc">TCompareFunc</a>;</code></td>
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<a name="PasDoc-Methods"></a><h3 class="summary">Methods</h3>
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<td class="itemcode"><code>procedure <b><a href="CastleGenericLists.TGenericStructList.html#CopyItem">CopyItem</a></b>(Src, Dest: Pointer); override;</code></td>
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<td class="itemcode"><code>procedure <b><a href="CastleGenericLists.TGenericStructList.html#Deref">Deref</a></b>(Item: Pointer); override;</code></td>
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<td class="visibility"><a href="legend.html"><img src="protected.gif" alt="Protected" title="Protected"></a></td>
<td class="itemcode"><code>function <b><a href="CastleGenericLists.TGenericStructList.html#Get">Get</a></b>(Index: Integer): T;</code></td>
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<td class="itemcode"><code>function <b><a href="CastleGenericLists.TGenericStructList.html#GetList">GetList</a></b>: PTypeList;</code></td>
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<td class="visibility"><a href="legend.html"><img src="protected.gif" alt="Protected" title="Protected"></a></td>
<td class="itemcode"><code>function <b><a href="CastleGenericLists.TGenericStructList.html#ItemPtrCompare">ItemPtrCompare</a></b>(Item1, Item2: Pointer): Integer;</code></td>
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<td class="itemcode"><code>procedure <b><a href="CastleGenericLists.TGenericStructList.html#Put">Put</a></b>(Index: Integer; const Item: T);</code></td>
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<td class="itemcode"><code>constructor <b><a href="CastleGenericLists.TGenericStructList.html#Create">Create</a></b>;</code></td>
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<td class="itemcode"><code>function <b><a href="CastleGenericLists.TGenericStructList.html#Add">Add</a></b>(const Item: T): Integer;</code></td>
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<td class="itemcode"><code>function <b><a href="CastleGenericLists.TGenericStructList.html#Extract">Extract</a></b>(const Item: T): T;</code></td>
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<td class="itemcode"><code>function <b><a href="CastleGenericLists.TGenericStructList.html#First">First</a></b>: T;</code></td>
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<td class="visibility"><a href="legend.html"><img src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>function <b><a href="CastleGenericLists.TGenericStructList.html#IndexOf">IndexOf</a></b>(const Item: T): Integer;</code></td>
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<td class="visibility"><a href="legend.html"><img src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>procedure <b><a href="CastleGenericLists.TGenericStructList.html#Insert">Insert</a></b>(Index: Integer; const Item: T);</code></td>
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<td class="itemcode"><code>function <b><a href="CastleGenericLists.TGenericStructList.html#Last">Last</a></b>: T;</code></td>
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<td class="visibility"><a href="legend.html"><img src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>procedure <b><a href="CastleGenericLists.TGenericStructList.html#Assign">Assign</a></b>(Source: <a href="CastleGenericLists.TGenericStructList.html">TGenericStructList</a>);</code></td>
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<td class="visibility"><a href="legend.html"><img src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>function <b><a href="CastleGenericLists.TGenericStructList.html#Remove">Remove</a></b>(const Item: T): Integer;</code></td>
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<td class="visibility"><a href="legend.html"><img src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>procedure <b><a href="CastleGenericLists.TGenericStructList.html#Sort">Sort</a></b>(Compare: <a href="CastleGenericLists.TGenericStructList.html#TCompareFunc">TCompareFunc</a>);</code></td>
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<td class="itemcode"><code>function <b><a href="CastleGenericLists.TGenericStructList.html#L">L</a></b>: PT;</code></td>
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<td class="itemcode"><code>function <b><a href="CastleGenericLists.TGenericStructList.html#Add">Add</a></b>: PT;</code></td>
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<a name="PasDoc-Properties"></a><h3 class="summary">Properties</h3>
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<td class="visibility"><a href="legend.html"><img src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>property <b><a href="CastleGenericLists.TGenericStructList.html#Items">Items</a></b>[Index:Integer]: T read <a href="CastleGenericLists.TGenericStructList.html#Get">Get</a> write <a href="CastleGenericLists.TGenericStructList.html#Put">Put</a>;</code></td>
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<td class="visibility"><a href="legend.html"><img src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><code>property <b><a href="CastleGenericLists.TGenericStructList.html#List">List</a></b>: PTypeList read <a href="CastleGenericLists.TGenericStructList.html#GetList">GetList</a>;</code></td>
</tr>
</table>
<h2 class="description">Description</h2>
<h3 class="detail">Internal Types</h3>
<table class="detail wide_list">
<tr class="list">
<td class="visibility"><a href="legend.html"><img src="published.gif" alt="Published" title="Published"></a></td>
<td class="itemcode"><a name="TCompareFunc"></a><code><b>TCompareFunc</b> = function(const Item1, Item2: T): Integer;</code></td>
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<tr><td colspan="2">
</td></tr>
</table>
<h3 class="detail">Fields</h3>
<table class="detail wide_list">
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<td class="visibility"><a href="legend.html"><img src="protected.gif" alt="Protected" title="Protected"></a></td>
<td class="itemcode"><a name="FOnCompare"></a><code>var <b>FOnCompare</b>: <a href="CastleGenericLists.TGenericStructList.html#TCompareFunc">TCompareFunc</a>;</code></td>
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</td></tr>
</table>
<h3 class="detail">Methods</h3>
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<td class="visibility"><a href="legend.html"><img src="protected.gif" alt="Protected" title="Protected"></a></td>
<td class="itemcode"><a name="CopyItem"></a><code>procedure <b>CopyItem</b>(Src, Dest: Pointer); override;</code></td>
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<td class="itemcode"><a name="Deref"></a><code>procedure <b>Deref</b>(Item: Pointer); override;</code></td>
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<td class="visibility"><a href="legend.html"><img src="protected.gif" alt="Protected" title="Protected"></a></td>
<td class="itemcode"><a name="Get"></a><code>function <b>Get</b>(Index: Integer): T;</code></td>
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<td class="itemcode"><a name="GetList"></a><code>function <b>GetList</b>: PTypeList;</code></td>
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<td class="visibility"><a href="legend.html"><img src="protected.gif" alt="Protected" title="Protected"></a></td>
<td class="itemcode"><a name="ItemPtrCompare"></a><code>function <b>ItemPtrCompare</b>(Item1, Item2: Pointer): Integer;</code></td>
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<td class="itemcode"><a name="Put"></a><code>procedure <b>Put</b>(Index: Integer; const Item: T);</code></td>
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<td class="itemcode"><a name="Create"></a><code>constructor <b>Create</b>;</code></td>
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<td class="itemcode"><a name="Add"></a><code>function <b>Add</b>(const Item: T): Integer;</code></td>
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<td class="itemcode"><a name="Extract"></a><code>function <b>Extract</b>(const Item: T): T;</code></td>
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<td class="itemcode"><a name="First"></a><code>function <b>First</b>: T;</code></td>
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<td class="itemcode"><a name="IndexOf"></a><code>function <b>IndexOf</b>(const Item: T): Integer;</code></td>
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<td class="itemcode"><a name="Insert"></a><code>procedure <b>Insert</b>(Index: Integer; const Item: T);</code></td>
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<td class="itemcode"><a name="Last"></a><code>function <b>Last</b>: T;</code></td>
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<td class="itemcode"><a name="Assign"></a><code>procedure <b>Assign</b>(Source: <a href="CastleGenericLists.TGenericStructList.html">TGenericStructList</a>);</code></td>
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<td class="visibility"><a href="legend.html"><img src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="Remove"></a><code>function <b>Remove</b>(const Item: T): Integer;</code></td>
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<td class="itemcode"><a name="Sort"></a><code>procedure <b>Sort</b>(Compare: <a href="CastleGenericLists.TGenericStructList.html#TCompareFunc">TCompareFunc</a>);</code></td>
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<td class="itemcode"><a name="L"></a><code>function <b>L</b>: PT;</code></td>
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<p>
Pointer to items. Exactly like <a class="normal" href="CastleGenericLists.TGenericStructList.html#List">List</a>, but this points to a single item, which means you can access particular item by <code>L[I]</code> instead of <code>Listˆ[I]</code> in FPC objfpc mode.
<p>This is just trivial shortcut, but we use direct access a <i>lot</i> for structures. Reasons: using Items[] default property means copying the structures, which is </p>
<ol class="paragraph_spacing">
<li value="1"><p>very dangerous (you can trivially easy modify a temporary result)</p></li>
<li value="2"><p>slow (important for us, since these are used for vector arrays that are crucial for renderer and various processing).</p></li>
</ol>
<p></p>
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<td class="visibility"><a href="legend.html"><img src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="Add"></a><code>function <b>Add</b>: PT;</code></td>
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<p>
Increase Count and return pointer to new item. Comfortable and efficient way to add a new item that you want to immediately initialize.</p>
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<h3 class="detail">Properties</h3>
<table class="detail wide_list">
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<td class="visibility"><a href="legend.html"><img src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="Items"></a><code>property <b>Items</b>[Index:Integer]: T read <a href="CastleGenericLists.TGenericStructList.html#Get">Get</a> write <a href="CastleGenericLists.TGenericStructList.html#Put">Put</a>;</code></td>
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<td class="visibility"><a href="legend.html"><img src="public.gif" alt="Public" title="Public"></a></td>
<td class="itemcode"><a name="List"></a><code>property <b>List</b>: PTypeList read <a href="CastleGenericLists.TGenericStructList.html#GetList">GetList</a>;</code></td>
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