Clojure is a member of the Lisp family of languages. Many of the features of Lisp have made it into other languages, but Lisp’s approach to code-as-data and its macro system still set it apart. Clojure extends the code-as-data system beyond parenthesized lists (s-expressions) to vectors and maps ...
A frontal lisp occurs when the tongue is placed anterior of the target. Interdental lisping is produced when the tip of the tongue protrudes between the front teeth and dentalised lisping is produced when the tip of the tongue just touches the front teeth.
Common Lisp will teach/allow you to think in abstractions at a level that I don't think I've seen in any other language. That and its unique object system are what I find most compelling about it as a language for brain-growing. Ocaml gives you static typing and tools to create nuanced descriptions of data state.
Common-lisp.net is a hosting site for open source Common Lisp projects. Quicklisp is a library manager for Common Lisp. 50 years of Lisp (1958–2008) was celebrated at LISP50@OOPSLA. There are regular local user meetings in Boston, Vancouver, and Hamburg.
As in other Lisps, the term "thunk" is used in Scheme to refer to a procedure with no arguments. The term "proper tail recursion" refers to the property of all Scheme implementations, that they perform tail-call optimization so as to support an indefinite number of active tail calls.