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---
meta-title: "List of Delphi Pascal Features and When Introduced"
meta-desc: "Partial list of various Delphi Pascal language and other features along with the version of Delphi where they were introduced."
---
<article>
<h1>Delphi Version Features</h1>
<p>This page contains an incomplete list of which features were introduced in which versions of Delphi<a href="#footnote-1"><sup>1</sup></a>.</p>
<p>If you have any additions or corrections please <a href="https://github.com/delphidabbler/delphidabbler.github.io/issues">create an issue</a> on GitHub (<small>GitHub account required</small>).</p>
<style>
td:last-child,
th:last-child {
text-align: center;
}
.text-disabled {
color: #aaaaaa;
}
th.alpha-section {
text-align: left !important;
font-size: large;
}
</style>
<div>
<p>
Jump to:
</p>
<p class="text-center"><strong>
<a href="#section-09">0..9</a>
<a href="#section-a">A</a>
<a href="#section-b">B</a>
<a href="#section-c">C</a>
<a href="#section-d">D</a>
<a href="#section-e">E</a>
<a href="#section-f">F</a>
<a href="#section-g">G</a>
<a href="#section-h">H</a>
<a href="#section-i">I</a>
<span class="text-disabled">J</span>
<span class="text-disabled">K</span>
<a href="#section-l">L</a>
<a href="#section-m">M</a>
<a href="#section-n">N</a>
<a href="#section-o">O</a>
<a href="#section-p">P</a>
<span class="text-disabled">Q</span>
<a href="#section-r">R</a>
<a href="#section-s">S</a>
<a href="#section-t">T</a>
<a href="#section-u">U</a>
<a href="#section-v">V</a>
<a href="#section-w">W</a>
<a href="#section-x">X</a>
<span class="text-disabled">Y</span>
<a href="#section-z">Z</a>
</strong>
</p>
</div>
<div class="table-responsive">
<table class="table table-striped table-bordered">
<colgroup>
<col width="86%">
<col width="14%">
</colgroup>
<thead>
<tr>
<th>Feature</th>
<th>Version</th>
</tr>
</thead>
<tbody>
<tr>
<td>& operator for treating keywords as identifiers</td>
<td>Delphi 2006</td>
</tr>
<tr>
<td><code>{$ALIGN}</code> compiler directive can take additional parameter <code>16</code> to set 16 byte alignment<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi XE</td>
</tr>
<tr>
<td><code>{$CODEALIGN}</code> compiler directive<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi XE</td>
</tr>
<tr>
<td><code>{$EXCESSPRECISION}</code> compiler directive for 64 bit compilers only<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi XE2</td>
</tr>
<tr>
<td><code>{$EXTERNALSYM}</code> compiler directive<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi 4</td>
</tr>
<tr>
<td><code>{$HIGHCHARUNICODE}</code> compiler directive<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi 2009</td>
</tr>
<tr>
<td><code>{$IF}</code> & <code>{$IFEND}</code> compiler directives<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi 6</td>
</tr>
<tr>
<td><code>{$IFEND}</code> compiler directive no longer required to close <code>{$IF}</code> statements: <code>{$ENDIF}</code> can now be used instead.<a href="#footnote-2"><sup>2</sup></a></td>
<td>Delphi XE4</td>
</tr>
<tr>
<td><code>{$LEGACYIFEND}</code> compiler directive<a href="#footnote-2"><sup>2</sup></a></td>
<td>Delphi XE5</td>
</tr>
<tr>
<td><code>{$LIBPREFIX}</code>, <code>{$LIBSUFFIX}</code> & <code>{$LIBVERSION}</code> compiler directives<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi 6</td>
</tr>
<tr>
<td><code>{$MESSAGE}</code> compiler directive</td>
<td>Delphi 6</td>
</tr>
<tr>
<td><code>{$POINTERMATH}</code> directive</td>
<td>Delphi 2009</td>
</tr>
<tr>
<td><code>{$METHODINFO}</code> compiler directive<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi 2006</td>
</tr>
<tr>
<td><code>{$NODEFINE}</code> compiler directive<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi 4</td>
</tr>
<tr>
<td><code>{$POINTERMATH}</code> compiler directive</td>
<td>Delphi 2009</td>
</tr>
<tr>
<td><code>{$REGION}</code> & <code>{$ENDREGION}</code> compiler directives<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi 2005</td>
</tr>
<tr>
<td><code>{$STRONGLINKTYPES}</code> compiler directive<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi XE</td>
</tr>
<tr>
<td><code>{$TEXTBLOCK}</code> compiler directive to determine how line breaks are treated in multiline strings.</td>
<td>Delphi 12</td>
</tr>
<tr>
<td><code>{$WARN}</code> compiler directive</td>
<td>Delphi 7</td>
</tr>
<tr>
<td><code>{$WRITEABLECONST}</code> compiler directive default value changes from <code>ON</code> to <code>OFF</code>.</td>
<td>Delphi 6</td>
</tr>
<tr>
<td><code>[ref]</code> attribute<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi XE3</td>
</tr>
</tbody>
<thead id="section-09">
<tr>
<th colspan="2" class="alpha-section">0..9</th>
</tr>
</thead>
<tbody>
<tr>
<td>32 bit compiler & support for Windows 95<a href="#footnote-7" title="Source: David I's presentation"><sup>7</sup></a></td>
<td>Delphi 2</td>
</tr>
<tr>
<td>64 bit binary versions of the Delphi 32 and 64 bit compilers</td>
<td>Delphi 12.2</td>
</tr>
<tr>
<td>64 bit compiler</td>
<td>Delphi XE2</td>
</tr>
</tbody>
<thead id="section-a">
<tr>
<th colspan="2" class="alpha-section">A</th>
</tr>
</thead>
<tbody>
<tr>
<td>Abstract classes</td>
<td>Delphi 2006</td>
</tr>
<tr>
<td>Actions & action lists</td>
<td>Delphi 4</td>
</tr>
<tr>
<td>Android 32 bit compiler & support<a href="#footnote-7" title="Source: David I's presentation"><sup>7</sup></a></td>
<td>Delphi XE5</td>
</tr>
<tr>
<td>Android 64 bit compiler<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi 10.4</td>
</tr>
<tr>
<td>Anonymous methods / closures</td>
<td>Delphi 2009</td>
</tr>
<tr>
<td><var>AnsiString</var> replaces <var>ShortString</var> as the default string type<sup><a href="#footnote-6" title="Source: StackOverflow">6</a>,<a href="#footnote-7">7</a></sup>.</td>
<td>Delphi 2</td>
</tr>
<tr>
<td><var>System.AnsiStrings</var> unit introduced</td>
<td>Delphi XE4</td>
</tr>
<tr>
<td>Atomic intrinsic functions <var>AtomicExchange</var>, <var>AtomicIncrement</var>, <var>AtomicCmpExchange</var> & <var>AtomicDecrement</var><a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi XE3</td>
</tr>
<tr>
<td>Attributes</td>
<td>Delphi 2010</td>
</tr>
</tbody>
<thead id="section-b">
<tr>
<th colspan="2" class="alpha-section">B</th>
</tr>
</thead>
<tbody>
<tr>
<td>Binary integer literals, e.g. <code>%100101</code></td>
<td>Delphi 11</td>
</tr>
<tr>
<td>Build groups<a href="#footnote-7" title="Source: David I's presentation"><sup>7</sup></a></td>
<td>Delphi XE</td>
</tr>
</tbody>
<thead id="section-c">
<tr>
<th class="alpha-section" colspan="2">C</th>
</tr>
</thead>
<tbody>
<tr>
<td>class constructors / destructors</td>
<td>Delphi 2010</td>
</tr>
<tr>
<td>Class data (<strong>class var</strong>)</td>
<td>Delphi 2006</td>
</tr>
<tr>
<td>Class helpers</td>
<td>Delphi 2005</td>
</tr>
<tr>
<td>Class helpers and record helpers can no longer access private data of the related class or record<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi 10.1</td>
</tr>
<tr>
<td>Class properties</td>
<td>Delphi 2005</td>
</tr>
<tr>
<td><var>Currency</var> type<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi 2</td>
</tr>
<tr>
<td>Custom managed records</td>
<td>Delphi 10.4</td>
</tr>
</tbody>
<thead id="section-d">
<tr>
<th colspan="2" class="alpha-section">D</th>
</tr>
</thead>
<tbody>
<tr>
<td><var>Default</var> intrinsic compiler routine (undocumented) that gets the default value of a given type.<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi 2009</td>
</tr>
<tr>
<td>Default parameters in functions, procedures & methods<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi 4</td>
</tr>
<tr>
<td><strong>delayed</strong> keyword (for loading of DLLs)</td>
<td>Delphi 2010</td>
</tr>
<tr>
<td><strong>dependency</strong> directive (for specifying the dependencies of an external library)<sup><a href="#footnote-6" title="Source: StackOverflow">6</a>,<a href="#footnote-10">10</a></sup></td>
<td>Delphi XE4</td>
</tr>
<tr>
<td><strong>deprecated</strong> directive</td>
<td>Delphi 6</td>
</tr>
<tr>
<td><strong>deprecated</strong> directive with comment</td>
<td>Delphi 2009</td>
</tr>
<tr>
<td>DirectX 10 support<a href="#footnote-7" title="Source: David I's presentation"><sup>7</sup></a></td>
<td>Delphi XE3</td>
</tr>
<tr>
<td><var>DirectoryExists</var> function moved to SysUtils unit from FileCtrl</td>
<td>Delphi 6</td>
</tr>
<tr>
<td>Digit separators in integer and floating point literals: e.g. <code>1_000_000</code></td>
<td>Delphi 11</td>
</tr>
<tr>
<td><strong>dispid</strong> directive<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi 3</td>
</tr>
<tr>
<td><strong>dispinterface</strong> keyword<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi 3</td>
</tr>
<tr>
<td>Docking, Anchors & Constraints in forms<a href="#footnote-7" title="Source: David I's presentation"><sup>7</sup></a></td>
<td>Delphi 4</td>
</tr>
<tr id="dynamic-array-ex">
<td>Dynamic array concatenation and addition extensions. Dynamic arrays can be initialised by assigning an array constant, as in <code>DI := [1, 2, 3];</code> and can be concatenated using code like <code>DI := DI + [1, 2, 3];</code> or <code>DI := DJ + DK</code>, where <var>DI</var>, <var>DJ</var> & <var>DK</var> are all dynamic integer arrays. See also <a href="#dynamic-array-routines">Dynamic array intrinsic routines</a>.</td>
<td>Delphi XE7</td>
</tr>
<tr id="dynamic-array-routines">
<td>Dynamic array intrinsic routines. The <var>Concat</var>, <var>Insert</var> & <var>Delete</var> compiler intrinsic routines now operate on dynamic arrays. See also <a href="#dynamic-array-ex">Dynamic array concatenation and addition extensions</a>.</td>
<td>Delphi XE7</td>
</tr>
<tr>
<td>Dynamic arrays</td>
<td>Delphi 4</td>
</tr>
</tbody>
<thead id="section-e">
<tr>
<th colspan="2" class="alpha-section">E</th>
</tr>
</thead>
<tbody>
<tr>
<td><var>EncodePath</var>, <var>EncodeAuth</var>, <var>EncodeQuery</var> & <var>EncodeForm</var> functions</td>
<td>Delphi 10.1</td>
</tr>
<tr>
<td><var>EOSError</var> (instead of <var>EWin32Error</var>)</td>
<td>Delphi 6</td>
</tr>
<tr>
<td><var>ExcludeTrailingPathDelimiter</var> function</td>
<td>Delphi 6</td>
</tr>
<tr>
<td><var>Exit</var> with result parameter</td>
<td>Delphi 2009</td>
</tr>
<tr>
<td><strong>experimental</strong> hinting directive<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi 6</td>
</tr>
<tr>
<td><var>Extended</var> type changes size depending upon the hardware and operating system<sup><a href="#footnote-5">5</a></sup></td>
<td>Delphi XE2</td>
</tr>
</tbody>
<thead id="section-f">
<tr>
<th colspan="2" class="alpha-section">F</th>
</tr>
</thead>
<tbody>
<tr>
<td>FastMM memory manager<a href="#footnote-7" title="Source: David I's presentation"><sup>7</sup></a></td>
<td>Delphi 2006</td>
</tr>
<tr>
<td>Final methods</td>
<td>Delphi 2006</td>
</tr>
<tr>
<td>FireMonkey cross platform framework (FMX)<a href="#footnote-7" title="Source: David I's presentation"><sup>7</sup></a></td>
<td>Delphi XE2</td>
</tr>
<tr>
<td>FireMonkey cross platform framework v2 (FM<sup>2</sup>)</td>
<td>Delphi XE3</td>
</tr>
<tr>
<td><var>FixedInt</var> & <var>FixedUInt</var> types - 32 bit signed & unsigned integers respectively across all platforms</td>
<td>Delphi XE8</td>
</tr>
<tr>
<td>Floating point number comparison routines added to <var>Math</var> unit<a href="#footnote-3" title="Source: EFG's Computer Lab"><sup>3</sup></a></td>
<td>Delphi 6</td>
</tr>
<tr>
<td>Focus mode in IDE editor<a href="#footnote-8" title="Source: Delphi Master Release List"><sup>8</sup></a></td>
<td>Delphi 12.2</td>
</tr>
<tr>
<td><strong>for</strong> .. <strong>in</strong> loops</td>
<td>Delphi 2005</td>
</tr>
<tr>
<td>Form inheritence<a href="#footnote-7" title="Source: David I's presentation"><sup>7</sup></a></td>
<td>Delphi 2</td>
</tr>
<tr>
<td>Frames</td>
<td>Delphi 5</td>
</tr>
<tr>
<td>Function inlining</td>
<td>Delphi 2005</td>
</tr>
</tbody>
<thead id="section-g">
<tr>
<th colspan="2" class="alpha-section">G</th>
</tr>
</thead>
<tbody>
<tr>
<td>Generics</td>
<td>Delphi 2009</td>
</tr>
<tr>
<td><var>GetCompilerVersion</var> & <var>GetRTLVersion</var> routines to get compiler & RTL versions as 16 bit unsigned integers with major version in the high byte and minor version in the low byte.</td>
<td>Delphi 12</td>
</tr>
<tr>
<td><var>GetTypeKind</var> intrinsic compiler function (undocumented)<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi XE7</td>
</tr>
</tbody>
<thead id="section-h">
<tr>
<th colspan="2" class="alpha-section">H</th>
</tr>
</thead>
<tbody>
<tr>
<td><var>HasWeakRef</var> intrinsic compiler function (undocumented)<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi XE7</td>
</tr>
<tr>
<td>Hash (System.Hash) unit</td>
<td>Delphi XE8</td>
</tr>
</tbody>
<thead id="section-i">
<tr>
<th colspan="2" class="alpha-section">I</th>
</tr>
</thead>
<tbody>
<tr>
<td><var>IInterface</var></td>
<td>Delphi 6</td>
</tr>
<tr>
<td><strong>implements</strong> keyword for properties<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi 4</td>
</tr>
<tr>
<td><var>IncludeTrailingPathDelim</var> function</td>
<td>Delphi 6</td>
</tr>
<tr>
<td>Inline variable declarations: e.g. <code><strong>for var</strong> I: Integer := 0 <strong>to</strong> 9 <strong>do</strong></code> or, with type inference, <code><strong>for var</strong> I := 0 <strong>to</strong> 9 <strong>do</strong></code></td>
<td>Delphi 10.3</td>
</tr>
<tr>
<td><strong>inline</strong> keyword</td>
<td>Delphi 2005</td>
</tr>
<tr>
<td>Inner exceptions</td>
<td>Delphi 2009</td>
</tr>
<tr>
<td><var>Insert</var> and <var>Delete</var> RTL routines can be used with dynamic arrays in a similar way to how they are used with strings.</td>
<td>Delphi XE7</td>
</tr>
<tr>
<td><var>Int8</var>, <var>Int16</var> & <var>Int32</var> types</td>
<td>Delphi 2009</td>
</tr>
<tr>
<td><var>Int64</var> type</td>
<td>Delphi 4</td>
</tr>
<tr>
<td><strong>interface</strong> keyword extended to introduce an interface type definition</td>
<td>Delphi 3</td>
</tr>
<tr>
<td>Interface to object casting</td>
<td>Delphi 2010</td>
</tr>
<tr>
<td>iOS 32 bit compiler & support reintroduced<sup><a href="#footnote-6" title="Source: StackOverflow">6</a>,<a href="#footnote-7" title="Source: David I's presentation">7</a>,<a href="#footnote-9">9</a></sup></td>
<td>Delphi XE4</td>
</tr>
<tr>
<td>iOS 64 bit compiler<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi XE8</td>
</tr>
<tr>
<td>IOUtils unit</td>
<td>Delphi 2010</td>
</tr>
<tr>
<td><var>IsConstValue</var> intrinsic compiler function (undocumented)<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi XE7</td>
</tr>
<tr>
<td><var>IsManagedType</var> intrinsic compiler function (undocumented)<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi XE7</td>
</tr>
<tr>
<td><var>IUnknown</var> (COM based interfaces)<a href="#footnote-7" title="Source: David I's presentation"><sup>7</sup></a></td>
<td>Delphi 3</td>
</tr>
</tbody>
<thead id="section-l">
<tr>
<th colspan="2" class="alpha-section">L</th>
</tr>
</thead>
<tbody>
<tr>
<td><strong>library</strong> directive</td>
<td>Delphi 6</td>
</tr>
<tr>
<td>Linux compiler for server applications</td>
<td>Delphi 10.2</td>
</tr>
<tr>
<td>Linux client platform support added via 3rd party FMXLinux library.<a href="#footnote-8" title="Source: Delphi Master Release List"><sup>8</sup></a></td>
<td>Delphi 10.3.1</td>
</tr>
<tr>
<td>Live bindings for VCL & FMX<a href="#footnote-7" title="Source: David I's presentation"><sup>7</sup></a></td>
<td>Delphi XE2</td>
</tr>
<tr id="long-string-literals">
<td>Long string literal support: string literals can now be longer than 255 characters.</td>
<td>Delphi 12</td>
</tr>
<tr>
<td><var>LongInt</var> & <var>LongWord</var> type sizes become platform dependent: 32 bit on 32 bit platforms, 64 bit on 64 bit platforms.</td>
<td>Delphi XE8</td>
</tr>
<tr>
<td><var>LongWord</var> type</td>
<td>Delphi 4</td>
</tr>
</tbody>
<thead id="section-m">
<tr>
<th colspan="2" class="alpha-section">M</th>
</tr>
</thead>
<tbody>
<tr>
<td>MacOS ARM 64 bit compiler<sup><a href="#footnote-6" title="Source: StackOverflow">6</a>,<a href="#footnote-8" title="Source: Delphi Master Release List">8</a></sup></td>
<td>Delphi 11</td>
</tr>
<tr>
<td>macOS 32 bit compiler<a href="#footnote-7" title="Source: David I's presentation"><sup>7</sup></a></td>
<td>Delphi XE2</td>
</tr>
<tr>
<td>macOS 64 bit compiler<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi 10.4</td>
</tr>
<tr>
<td><var>Margins</var> and <var>Padding</var> properties on <var>TControl</var></td>
<td>Delphi 2006</td>
</tr>
<tr>
<td>MariaDB support added<a href="#footnote-8" title="Source: Delphi Master Release List"><sup>8</sup></a></td>
<td>Delphi 10.2</td>
</tr>
<tr>
<td>Markdown support in IDE<a href="#footnote-8" title="Source: Delphi Master Release List"><sup>8</sup></a></td>
<td>Delphi 11.2</td>
</tr>
<tr>
<td>Metropolis UI for Windows 8 back to XP<a href="#footnote-7" title="Source: David I's presentation"><sup>7</sup></a></td>
<td>Windows XE3</td>
</tr>
<tr>
<td>Mobile form designer<a href="#footnote-7" title="Source: David I's presentation"><sup>7</sup></a></td>
<td>Delphi XE4</td>
</tr>
<tr>
<td>MSBuild & build events<a href="#footnote-7" title="Source: David I's presentation"><sup>7</sup></a></td>
<td>Delphi 2007</td>
</tr>
<tr>
<td>Multiline string literals, delimited by triple quotes (<code>'''</code>)</td>
<td>Delphi 12</td>
</tr>
<tr>
<td>MySQL support<a href="#footnote-7" title="Source: David I's presentation"><sup>7</sup></a></td>
<td>Delphi 2006</td>
</tr>
</tbody>
<thead id="section-n">
<tr>
<th colspan="2" class="alpha-section">N</th>
</tr>
</thead>
<tbody>
<tr id="namespaces">
<td>Namespaces [<a href="https://docwiki.embarcadero.com/RADStudio/Alexandria/en/Using_Namespaces_with_Delphi">more info</a>]. See also: <a href="#unit-scope-names"><em>Unit scope names</em></a>.</td>
<td>Delphi 2005</td>
</tr>
<tr>
<td>NaN number comparisons supported</td>
<td>Delphi 12</td>
</tr>
<tr>
<td><var>NativeInt</var> & <var>NativeUInt</var> types</td>
<td>Delphi 7<a href="#footnote-4"><sup>4</sup></td>
</tr>
<tr>
<td><var>NativeInt</var> & <var>NativeUInt</var> types become weak references. They can no longer be used as separate types.</td>
<td>Delphi 12</td>
</tr>
<tr>
<td>Nested constants within classes / records</td>
<td>Delphi 2005</td>
</tr>
<tr>
<td>Nested types within classes</td>
<td>Delphi 2005</td>
</tr>
</tbody>
<thead id="section-o">
<tr>
<th colspan="2" class="alpha-section">O</th>
</tr>
</thead>
<tbody>
<tr>
<td>OLE automation<a href="#footnote-7" title="Source: David I's presentation"><sup>7</sup></a></td>
<td>Delphi 2</td>
</tr>
<tr>
<td>Operator overloading on records</td>
<td>Delphi 2006</td>
</tr>
<tr>
<td><strong>out</strong> parameters & keyword<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi 3</td>
</tr>
<tr>
<td><strong>overload</strong> directive</td>
<td>Delphi 4</td>
</tr>
<tr>
<td>Overloading for functions, procedures and methods<sup><a href="#footnote-6" title="Source: StackOverflow">6</a>,<a href="#footnote-7" title="Source: David I's presentation">7</a></sup></td>
<td>Delphi 4</td>
</tr>
</tbody>
<thead id="section-p">
<tr>
<th colspan="2" class="alpha-section">P</th>
</tr>
</thead>
<tbody>
<tr>
<td><strong>package</strong> keyword and change to install components in packages<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi 3</td>
</tr>
<tr>
<td>Parallel library in RTL<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi XE7</td>
</tr>
<tr>
<td><strong>platform</strong> directive</td>
<td>Delphi 6</td>
</tr>
<tr>
<td><var>Pointer</var> type size becomes platform dependent: 32 bit on 32 bit platforms, 64 bit on 64 bit platforms.</td>
<td>Delphi XE2</td>
</tr>
</tbody>
<thead id="section-r">
<tr>
<th colspan="2" class="alpha-section">R</th>
</tr>
</thead>
<tbody>
<tr>
<td><var>RaiseLastOSError</var> procedure</td>
<td>Delphi 6</td>
</tr>
<tr>
<td><var>real</var> type changes from 8 bytes in size to 6 bytes and becomes an alias for <var>Double</var>. The <var>Real48</var> is introduced as a 6 byte replacement for the old <var>real</var>.</td>
<td>Delphi 4.</td>
</tr>
<tr>
<td>Record Helpers for built in types<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi XE3</td>
</tr>
<tr>
<td>Record helpers for <var>TDateTime</var> and <var>Currency</var> types.</td>
<td>Delphi 11</td>
</tr>
<tr>
<td>Records with methods (aka enhanced methods or advanced records)</td>
<td>Delphi 2006</td>
</tr>
<tr>
<td><strong>register</strong> calling convention<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi 2</td>
</tr>
<tr>
<td>Regular expression library<a href="#footnote-7" title="Source: David I's presentation"><sup>7</sup></a></td>
<td>Delphi XE</td>
</tr>
<tr>
<td><strong>resourcestring</strong> statement</td>
<td>Delphi 3</td>
</tr>
<tr>
<td>REST services components<a href="#footnote-7" title="Source: David I's presentation"><sup>7</sup></a></td>
<td>Delphi XE5</td>
</tr>
<tr>
<td>RTTI enhancements</td>
<td>Delphi 2010</td>
</tr>
</tbody>
<thead id="section-s">
<tr>
<th colspan="2" class="alpha-section">S</th>
</tr>
</thead>
<tbody>
<tr>
<td><var>SafeLoadLibrary</var> function</td>
<td>Delphi 5</td>
</tr>
<tr>
<td>Scoped enumerators (must have type name prefix)</td>
<td>Delphi 2009</td>
</tr>
<tr>
<td>Sealed classes</td>
<td>Delphi 2006</td>
</tr>
<tr>
<td>Sensor support for VCL & FMX<a href="#footnote-7" title="Source: David I's presentation"><sup>7</sup></a></td>
<td>Delphi XE3</td>
</tr>
<tr>
<td>Skia integration</td>
<td>Delphi 12</td>
</tr>
<tr>
<td><a href="https://docwiki.embarcadero.com/RADStudio/Athens/en/Smart_CodeInsight">Smart Code Insight</a> with embedded AI</td>
<td>Delphi 12.2</td>
</tr>
<tr>
<td>Split editor views in IDE<a href="#footnote-8" title="Source: Delphi Master Release List"><sup>8</sup></a></td>
<td>Delphi 12</td>
</tr>
<tr>
<td><strong>static</strong> methods and properties<a href="#footnote-7" title="Source: David I's presentation"><sup>7</sup></a></td>
<td>Delphi 2005</td>
</tr>
<tr>
<td><strong>stdcall</strong> calling convetion<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi 2</td>
</tr>
<tr>
<td><strong>strict private</strong> and <strong>strict protected</strong> visibility specifiers</td>
<td>Delphi 2005</td>
</tr>
<tr>
<td><strong>string</strong> type is <var>UnicodeString</var></td>
<td>Delphi 2009</td>
</tr>
<tr>
<td>StrUtils unit</td>
<td>Delphi 6</td>
</tr>
</tbody>
<thead id="section-t">
<tr>
<th colspan="2" class="alpha-section">T</th>
</tr>
</thead>
<tbody>
<tr>
<td><var>TApplication.MainFormOnTaskbar</var> property</td>
<td>Delphi 2007</td>
</tr>
<tr>
<td><var>TArray<T></var> type in <var>System</var> unit.</td>
<td>Delphi 2010</td>
</tr>
<tr>
<td><var>TBytes</var> alias for <strong>array</strong> <strong>of</strong> <var>Byte</var></td>
<td>Delphi 2007</td>
</tr>
<tr>
<td>Text format form files</td>
<td>Delphi 5</td>
</tr>
<tr>
<td><var>TForm.ShowInTaskbar</var> property</td>
<td>Delphi 12</td>
</tr>
<tr>
<td><var>TForm.ShowInTaskbar</var> property</td>
<td>Delphi 12</td>
</tr>
<tr>
<td><var>TFormatSettings</var> and overloaded format and conversion routines that use it</td>
<td>Delphi 7</td>
</tr>
<tr>
<td><strong>threadvar</strong> keyword and threading support<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi 2</td>
</tr>
<tr>
<td><var>TNoRefCountObject</var> non-reference-counted <var>IInterface</var> implementation</td>
<td>Delphi 11</td>
</tr>
<tr>
<td><var>TOrderedDictionary</var> - a sorted generic dictionary class.</td>
<td>Delphi 12.2</td>
</tr>
<tr>
<td><var>TObject.Equals</var> virtual method</td>
<td>Delphi 2009</td>
</tr>
<tr>
<td><var>TObject.GetHashCode</var> virtual method</td>
<td>Delphi 2009</td>
</tr>
<tr>
<td><var>TObject.ToString</var> virtual method</td>
<td>Delphi 2009</td>
</tr>
<tr>
<td><var>TObject.UnitName</var> method</td>
<td>Delphi 2009</td>
</tr>
<tr>
<td>Touch & gesture support</td>
<td>Delphi 2010</td>
</tr>
<tr>
<td><var>TPair<TKey,TValue></var> record</td>
<td>Delphi 2009</td>
</tr>
<tr>
<td><var>TParallelArray</var> - a class to enable running of some operations in parallel threads.</td>
<td>Delphi 12.2</td>
</tr>
<tr>
<td><var>TProc<T1,...></var>, <var>TFunc<T1,...></var> & <var>TPredicate<T></var></td>
<td>Delphi 2010</td>
</tr>
<tr>
<td><var>TRegistry</var> supports access flags</td>
<td>Delphi 6</td>
</tr>
<tr>
<td><var>TRegistry.OpenKeyReadOnly</var> method</td>
<td>Delphi 4</td>
</tr>
<tr>
<td><var>TryStrToXXXX</var> routines added to <var>SysUtils</var></td>
<td>Delphi 6</td>
</tr>
<tr>
<td><var>TStream</var> supports 64 bit size and seek offsets</td>
<td>Delphi 6</td>
</tr>
<tr>
<td><var>TStringList.Create(OwnsObjects: Boolean)</var> constructor overload</td>
<td>Delphi 2009</td>
</tr>
<tr>
<td>Typed constants can no longer be assigned values by default. The <code>{$J+}</code> compiler directive must be used to restore previous behaviour<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a>.</td>
<td>Delphi 6</td>
</tr>
<tr>
<td>Types unit</td>
<td>Delphi 6</td>
</tr>
</tbody>
<thead id="section-u">
<tr>
<th colspan="2" class="alpha-section">U</th>
</tr>
</thead>
<tbody>
<tr>
<td><var>UInt8</var>, <var>UInt16</var> & <var>UInt32</var> types</td>
<td>Delphi 2009</td>
</tr>
<tr>
<td><var>UInt64</var> type</td>
<td>Delphi 7</td>
</tr>
<tr>
<td>Unicode identifier names</td>
<td>Delphi 2005</td>
</tr>
<tr>
<td>Unicode source files</td>
<td>Delphi 2005</td>
</tr>
<tr>
<td>Unicode support (inc Windows API)</td>
<td>Delphi 2009</td>
</tr>
<tr>
<td><var>UnicodeString</var> type</td>
<td>Delphi 2009</td>
</tr>
<tr>
<td>Unit conversion handling (that's <em>unit</em> as in mm or inches, not <em>unit</em> as in source code unit)</td>
<td>Delphi 6</td>
</tr>
<tr id="unit-scope-names">
<td>Unit scope names [<a href="https://docwiki.embarcadero.com/RADStudio/Alexandria/en/Unit_Scope_Names">More info</a>]. See also: <a href="#namespaces"><em>Namespaces</em></a>.</td>
<td>Delphi XE2</td>
</tr>
<tr>
<td>UTF8 source files</td>
<td>Delphi 2005</td>
</tr>
<tr>
<td><var>UTF8Decode</var> and <var>UTF8Encode</var> routines</td>
<td>Delphi 6</td>
</tr>
<tr>
<td><var>UTF8String</var> type</td>
<td>Delphi 6</td>
</tr>
</tbody>
<thead id="section-v">
<tr>
<th colspan="2" class="alpha-section">V</th>
</tr>
</thead>
<tbody>
<tr>
<td>Variants unit</td>
<td>Delphi 6</td>
</tr>
<tr>
<td>VCL styles</td>
<td>Delphi XE2</td>
</tr>
</tbody>
<thead id="section-w">
<tr>
<th colspan="2" class="alpha-section">W</th>
</tr>
</thead>
<tbody>
<tr>
<td><a href="https://docwiki.embarcadero.com/RADStudio/Athens/en/WebStencils">WebStencils</a> - scriptable text-processing engine.</td>
<td>Delphi 12.2</td>
</tr>
<tr>
<td><var>WideString</var> type<a href="#footnote-6" title="Source: StackOverflow"><sup>6</sup></a></td>
<td>Delphi 3</td>
</tr>
<tr>
<td>Windows 7 & 8.1 styles<a href="#footnote-8" title="Source: Delphi Master Release List"><sup>8</sup></a></td>
<td>Delphi XE6</td>
</tr>
<tr>
<td>Windows 10 styles<a href="#footnote-8" title="Source: Delphi Master Release List"><sup>8</sup></a></td>
<td>Delphi 10</td>
</tr>
<tr>
<td>Windows Vista support (glass & themes)<a href="#footnote-7" title="Source: David I's presentation"><sup>7</sup></a></td>
<td>Delphi 2007</td>