|
| license = [[Apache License|Apache License, v2.0]]
}}
The '''Dynamic Language Runtime''' (DLR) from [[Microsoft]] runs on top of the [[Common Language Runtime]] and provides [[computer language]] services for several different [[dynamic language]]s. These services include:
* A dynamic [[type system]], to be shared by all languages using the DLR services
* [[Dynamic dispatch|Dynamic method dispatch]]
* Hosting API
The DLR is used to implement dynamic languages on the [[.NET Framework]], specificallyincluding bythe [[IronPython]] and [[IronRuby]] projects.
ByBecause having severalthe dynamic language implementations share a common underlying system, it should be easier tofor letthem these implementationsto interact with one another. For example, it should be possible to use libraries from any dynamic language in any other dynamic language. In addition, the hosting API allows interoperability with statically typed [[list of CLI languages|CLI languages]] like [[C sharp (programming language)|C#]] and [[Visual Basic .NET]].
==History==
| url = http://lists.ironpython.com/pipermail/users-ironpython.com/2008-January/006235.html | title = Roadmap for IronPython 2.0
| last=Viehland |first=Dino
| quote=''We don't really have a document like this but the general goal is to ship IronPython 2.0 by the end of the year. For the DLR its selfitself the plan is to ship a v1.0 around the same time as IronPython 2.0.''
| date = 2008-01-15
| accessdate = 2008-02-09}}</ref>
Microsoft shipped .NET DLR 0.9 beta on the 26in November 2008,<ref>http://www.codeplex.com/dlr</ref> and final 0.9 on 10in December 2008. Version 1.0 shipped onin April 16, 2010. On 16In July 2010, Microsoft changed the license of the DLR from the [[Shared source#Microsoft Public License (Ms-PL)|Microsoft Public License]] to the Apache License, v2.0.<ref>http://dlr.codeplex.com/license</ref> With the release of [[.NET 4]], also in April 2010, DLR was incorporated into the .NET Framework itself.<ref>https://msdn.microsoft.com/en-us/library/dd233052.aspx</ref>
The open source DLR project hosted on CodePlexGitHub has a few additional features for language implementers, but there has been no activity on the project since the July 2010 release, which could be linked to what some, including a Microsoft developer who worked for [[IronRuby]], saw as a lack of commitment from Microsoft to dynamic languages on the .NET Framework.<ref>{{cite web
| url = http://www.rubyinside.com/microsoft-tires-of-ironruby-jimmy-schementi-jumps-ship-3639.html
| title=Microsoft Tires of IronRuby; Jimmy Schementi Jumps Ship
| 