Clojure is a dynamic, general-purpose programming language, combining the approachability and interactive development of a scripting language with an efficient and robust infrastructure for multithreaded programming. Clojure is a compiled language, yet remains completely dynamic – every feature supported by Clojure is…
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The Clojure team is proud to introduce Morse, a graphical, interactive tool for browsing and inspecting Clojure data, evolved from REBL . Morse is open source, licensed under the Apache license.
Clojure REPLs are used for a broad spectrum of purposes, from learning the language to data exploration to live music performance. This chapter will provide some guiding principles for applying Clojure REPLs to the more common use case of pragmatic software development.
Each time we evaluate an expression, the REPL shows us a textual representation of the result: that’s the Print part of Read-Eval-Print-Loop . Most of the time, this textual representation is clear enough for the programmer, but sometimes it becomes difficult to read - especially when dealing with big or deeply nested…
Threading macros, also known as arrow macros, convert nested function calls into a linear flow of function calls, improving readability.
Clojure is a dynamic development environment where you interact with your program while you write it, growing and adding to it while it’s running. To work with Clojure you need an editor that supports evaluation in source files and structural editing (working with nested forms in addition to character editing).
The spec library ( API docs ) specifies the structure of data, validates or conforms it, and can generate data based on the spec.
In all the above scenarios you might want to use other Clojure and Java libraries (dependencies or 'deps'). These may be libraries you are writing locally, projects in git (e.g. on GitHub) or, commonly, libraries available in the Maven ecosystem and hosted by central repositories like Maven Central or Clojars.