Published on March 2, 2009
: an overview presentation by Larry Diehl language by Rich Hickey Monday, March 2, 2009
What is Clojure? • A programming language (note the j) • ~1.3 years old (as of 02/26/09) • A dialect of Lisp • JVM-hosted • Concurrency-minded • Expressive • Malleable Monday, March 2, 2009
Why Clojure? • Less code to read • Meta-programming and DSLs • Simpler concurrency model • Lots of Java libraries to reuse • As fast as Java when necessary • Dynamic and JIT, but optionally AOT Monday, March 2, 2009
Concurrency • The age of multiple cores is here • Thread-safety in a Java library is practically a feature • Thread-safety in a Clojure library is practically an assumption • No language-level support for distributed concurrency Monday, March 2, 2009
Examples • Things that don’t change but are used often • Unit testing Java code • Graphing • Rapid prototyping • Lightweight REST APIs Monday, March 2, 2009
Clojure as a Lisp • Functional (not Object Oriented) • Preﬁx syntax (simple!) • Data type literals (less parentheses) • Lexically scoped (mostly) • Code as data (HOFs and homoiconic) Monday, March 2, 2009
Editors • Emacs + SLIME • not the only option!!! • IntelliJ IDEA (ofﬁcial JetBrains plugin) • Netbeans (Enclojure) • Eclipse (clojure-dev) Monday, March 2, 2009
The End ... just kidding Monday, March 2, 2009
http://clojure.org << left side right side >> Monday, March 2, 2009
Buzzwords http://github.com/larrytheliquid/buzzer • rest of presentation will center around developing a library • the purpose of the library is to detect and report on buzzword usage within text • new concepts will gradually be introduced with new features • TDD will be employed to help the learning process Monday, March 2, 2009
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