The Object Management Group has released a new version of UML. The web site for Dr. Dobb's asks the question: Do You Even Care? It's a proper question.
It's proper because UML, despite a spike of interest in the late 1990s, has failed to move into the mainstream of software development. While the Dr. Dobb's article claims ubiquity ("dozens of UML books published, thousands of articles and blogs posted, and thousands of training classes delivered"), UML is anything but ubiquitous. If anything, UML has been ignored in the latest trends of software: agile development techniques and functional programming. It is designed for large projects and large teams designing the system up front and implementing it according to detailed documents. It is designed for systems built with mutable objects, and functional programming avoids both objects and mutable state.
UML was built to help us design and build large complex systems. It was meant to abstract away details and let us focus on the structure, using a standard notation that could be recognized and understood by all practitioners. We still need those things -- but UML doesn't work for a lot of projects. We need a new UML, one that can work with smaller projects, agile projects, and functional programming languages.
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