[Haskell] ANN: Agda 2.4.2

[Andreas Abel]

Agda 2.4.2 has been released!  It comes with an experimental 
implementation of "type" classes (see "instance search" below).

Download with cabal install Agda-2.4.2 (might need cabal update first) 
or go to
http://wiki.portal.chalmers.se/agda/pmwiki.php?n=Main.Download.

Highlights:

- Recursive instance search.

   Instance arguments are much faster than before and now work
   like a proper class system.

- Major improvements to reflection

   - Quoting and unquoting of declarations and pattern matching lambdas.

   - New syntax to simplify using reflection:
       tactic f
     is sugar for
       quoteGoal g in unquote (f g)

More details here: 
https://github.com/agda/agda/blob/2.4.2/doc/release-notes/2-4-2.txt

-- 
Andreas Abel  <><      Du bist der geliebte Mensch.

Department of Computer Science and Engineering
Chalmers and Gothenburg University, Sweden

andreas.abel at gu.se
http://www2.tcs.ifi.lmu.de/~abel/

-- 
Andreas Abel  <><      Du bist der geliebte Mensch.

Department of Computer Science and Engineering
Chalmers and Gothenburg University, Sweden

andreas.abel at gu.se
http://www2.tcs.ifi.lmu.de/~abel/