May-2011.tex

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\begin{hcarentry}[section,updated]{Agda}
\label{agda}
\report{Nils Anders Danielsson}%05/11
\status{actively developed}
\participants{Ulf Norell, Andreas Abel, and many others}
\makeheader

Agda is a dependently typed functional programming language (developed
using Haskell). A central feature of Agda is inductive families, i.e.\
GADTs which can be indexed by \emph{values} and not just types. The
language also supports coinductive types, parameterized modules, and
mixfix operators, and comes with an \emph{interactive} interface---the
type checker can assist you in the development of your code.

A lot of work remains in order for Agda to become a full-fledged
programming language (good libraries, mature compilers, documentation,
etc.), but already in its current state it can provide lots of fun as
a platform for experiments in dependently typed programming.

In February version 2.2.10 was released. This release includes a new
compiler backend, implemented by Daniel Gustafsson and Olle
Fredriksson. The backend incorporates several new optimisations, based
on work by Edwin Brady and others, and work is in progress to add even
more optimisations.

\FurtherReading
  The Agda Wiki: \url{http://wiki.portal.chalmers.se/agda/}
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