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	<title>Perfect Developer - Revision history</title>
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	<updated>2026-10-26T01:55:18Z</updated>
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		<id>http://debianws.lexgopc.com/wiki143/index.php?title=Perfect_Developer&amp;diff=1895072&amp;oldid=prev</id>
		<title>imported&gt;Msnicki: /* See also */ rm Spec# deleted following AfD.</title>
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		<updated>2021-08-12T21:06:27Z</updated>

		<summary type="html">&lt;p&gt;&lt;span class=&quot;autocomment&quot;&gt;See also: &lt;/span&gt; rm &lt;a href=&quot;/wiki143/index.php?title=Spec_Sharp&amp;amp;action=edit&amp;amp;redlink=1&quot; class=&quot;new&quot; title=&quot;Spec Sharp (page does not exist)&quot;&gt;Spec#&lt;/a&gt; deleted following AfD.&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;{{no footnotes|date=March 2017}}&lt;br /&gt;
&amp;#039;&amp;#039;&amp;#039;Perfect Developer&amp;#039;&amp;#039;&amp;#039; (PD) is a tool for developing [[computer programs]] in a rigorous manner. It is used to develop applications in areas including IT systems and airborne critical systems. The principle is to develop a formal specification and refine the specification to code. Even though the tool is founded on [[formal methods]], the suppliers claim that advanced mathematical knowledge is not a prerequisite.&lt;br /&gt;
&lt;br /&gt;
PD supports the Verified Design by Contract paradigm, which is an extension of [[Design by contract]]. In Verified Design by Contract, the contracts are verified by [[static analysis]] and automated theorem proving, so that it is certain that they will not fail at runtime.&lt;br /&gt;
&lt;br /&gt;
The &amp;#039;&amp;#039;&amp;#039;Perfect&amp;#039;&amp;#039;&amp;#039; [[specification language]] used has an [[object-oriented]] style, producing code in [[programming languages]] including [[Java (programming language)|Java]], [[C Sharp (programming language)|C#]] and [[C++]]. It has been developed by the [[United Kingdom|UK]] company &amp;#039;&amp;#039;Escher Technologies Ltd&amp;#039;&amp;#039;. They note on their website that their claim is not that the language itself is perfect, but that it can be used to produce code which perfectly implements a precise specification.&lt;br /&gt;
&lt;br /&gt;
==See also==&lt;br /&gt;
* [[Java Modeling Language|JML]]&lt;br /&gt;
* [[Safety Integrity Level]]&lt;br /&gt;
&lt;br /&gt;
==External links==&lt;br /&gt;
*[http://www.eschertech.com/products/ Perfect Developer]&lt;br /&gt;
*[http://www.eschertech.com/ Escher Technologies]&lt;br /&gt;
*[https://web.archive.org/web/20060106062624/http://www.dstan.mod.uk/ Defence Standards]&lt;br /&gt;
&lt;br /&gt;
{{programming-software-stub}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Formal methods tools]]&lt;br /&gt;
[[Category:Formal specification languages]]&lt;/div&gt;</summary>
		<author><name>imported&gt;Msnicki</name></author>
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