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'''Pure''', successor to the equational language '''Q''', is a dynamically typed, [[Functional programming|functional]] [[programming language]] based on [[term rewriting]]. It has facilities for user-defined [[operator (programming)|operator]] syntax, [[Macro (computer science)|macros]], [[arbitrary-precision arithmetic]] (multiple-precision numbers), and compiling to native code through the [[LLVM]]. Pure is [[free and open-source software]] distributed (mostly) under the [[GNU Lesser General Public License]] version 3 or later.
== Overview ==
Pure comes with an interpreter and debugger, provides automatic memory management, has powerful functional and symbolic programming abilities, and interfaces to [[Library (computing)|libraries]] in [[C (programming language)|C]] (e.g., for numerics, low-level protocols, and other such tasks). At the same time, Pure is a ''small'' language designed from scratch; its interpreter is not large, and the library modules are written in Pure. The syntax of Pure resembles that of [[Miranda (programming language)|Miranda]] and [[Haskell (programming language)|Haskell]], but it is a [[free-format language]] and thus uses explicit delimiters (rather than [[off-side rule]] indents) to denote program structure.
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