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This topic has appeared in the trending rankings 1 time(s) in the past year. While it does not trend frequently, its appearance suggests a renewed or concentrated surge of public interest.
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Class-responsibility-collaboration_card entered the ranking for the first time today at position #. This is its highest position ever recorded.
This topic has appeared in the English Wikipedia rankings 1 time. It first appeared on 2026-07-21 and was most recently seen on 2026-07-21.
Class-responsibility-collaboration (CRC) cards are a brainstorming tool used in the design of object-oriented software. They were originally proposed by Ward Cunningham and Kent Beck as a teaching tool but are also popular among expert designers and recommended by extreme programming practitioners. Author Martin Fowler has written that CRC cards may be a sensible means by which multiple alternative interactions may be quickly devised, as they avoid a great deal of drawing and erasing. CRC card sessions may be followed by the creation of sequence diagrams to capture interactions that are identified.
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