Haskell で json を扱う

snippet Haskell

JSON Schema が提案されたりして、ますます使う機会が増えてきた JSON。
Haskell では http://hackage.haskell.org/cgi-bin/hackage-scripts/package/json を使って JSON を扱うことができる。
そこで、http://delicious.com の hot list をとってくるサンプルを書いた。


このサンプルは

を使っているため、これらをあらかじめ cabal でインストールしておく必要があります。


実行結果

% ghc --make delicious.hs
% ./delicious
url: http://na.blackberry.com/eng/services/appworld/
title: BlackBerry - The Official BlackBerry App World – BlackBerry App Store
tags: ["blackberry","mobile","apps","appstore","app","software","download","store","applications","world"]
dt: 2009-04-19T09:02:56Z

url: http://adage.com/article?article_id=135735
title: Tropicana Line's Sales Plunge 20% Post-Rebranding - Advertising Age - News
tags: ["design","branding","marketing","tropicana","advertising","business","packaging","rebranding","logo","sales"]
dt: 2009-04-19T09:02:56Z

url: http://ejohn.org/blog/javascript-testing-does-not-scale/
title: John Resig - JavaScript Testing Does Not Scale
tags: ["javascript","testing","jquery","scalability","distributed","browser","browsers","development","crossbrowser","test"]
dt: 2009-04-19T09:02:56Z

url: http://www.google.com/webmasters/provider/
title: Google Services for Websites
tags: ["google","tools","webmaster","seo","web","webdesign","webdev","services","hosting","search"]
dt: 2009-04-19T09:02:56Z

url: http://www.webdesignerwall.com/general/finding-inspiration/
title: Finding Inspiration
tags: ["inspiration","design","webdesign","tips","creative","graphics","web","freelance","art","freelancing"]
dt: 2009-04-19T09:02:56Z

追記

gist という便利なサービスがあることを知ったので、そっちに貼りつけてみる。
番号がちょうど 98000 で、なんとなく嬉しい。