Curiously recurring template pattern: Difference between revisions

Revision as of 02:42, 15 May 2019

Revision as of 15:41, 3 June 2019

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as well as in code examples that [[Timothy Budd]] created in his multiparadigm language Leda.<ref>{{cite book | first=Timothy | last=Budd | authorlink=Timothy Budd | title=[[Multiparadigm programming in Leda]] | publisher=Addison-Wesley | isbn=0-201-82080-3 | year=1994}}</ref> It is sometimes called "Upside-Down Inheritance"<ref>{{Cite web|url=http://www.apostate.com/programming/atlupsidedown.html |title=Apostate Café: ATL and Upside-Down Inheritance |date=2006-03-15 |access-date=2016-10-09 |deadurl=bot: unknown |archiveurl=https://web.archive.org/web/20060315072824/http://www.apostate.com/programming/atlupsidedown.html |archivedate=15 March 2006 |df=dmy }}</ref><ref>{{Cite web|url=http://archive.devx.com/free/mgznarch/vcdj/1999/julmag99/atlinherit1.asp |title=ATL and Upside-Down Inheritance |date=2003-06-04 |access-date=2016-10-09 |deadurl=bot: unknown |archiveurl=https://web.archive.org/web/20030604104137/http://archive.devx.com/free/mgznarch/vcdj/1999/julmag99/atlinherit1.asp |archivedate=4 June 2003 |df=dmy }}</ref> due to the way it allows class hierarchies to be extended by substituting different base classes.

The Microsoft Implementation of CRTP in [[Active Template Library]] (ATL) was independently discovered, also in 1995 by Jan Falkin who accidentally derived a base class from a derived class. Christian Beaumont, first saw Jan's code and initially thought it couldn't possibly compile in the Microsoft compiler available at the time. Following this revelation that it did indeed work, Christian based the entire ATL and [[Windows Template Library]] (WTL) design on this mistake.{{Citation needed|date=August 2018}}

== General form ==