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アロー関数で自己再帰@ES6

Last updated at 2014-07-25Posted at 2014-07-24

ECMAScirpt6で導入予定のアロー関数とデフォルト引数を組合せた自己再帰関数。

var fact = ((f=n=>n>1?n*f(n-1):1)=>f)();
fact(5); //== 120

引用元
http://d.hatena.ne.jp/teramako/20130321/p1
http://www.mail-archive.com/es-discuss@mozilla.org/msg22135.html

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