Groovy doesn't claim to be a fully-fledged functional programming language but it does provide the Java or Groovy developer with a whole toolbox of features for doing functional style programs. This talk looks at the key Groovy features which support a functional style. Topics covered include using closures, currying and partial evaluation, closure composition, useful functional-centric AST macros, useful functional-centric runtime meta-programming tricks, trampolining, using Java functional libraries, immutable data structures, lazy and infinite lists, using Groovy 2's static typing and approaches for moving beyond Java's type system.
Paul King leads ASERT, an organization based in Brisbane, Australia which provides software development, training and mentoring services to customers wanting to embrace new technologies, harness best practices and innovate. He has been contributing to open source projects for 20 years and is an active committer on numerous projects including Groovy. Paul speaks at international conferences, publishes in software magazines and journals, and is a co-author of Manning's best-seller: Groovy in Action.