http://www.talkaboutprogramming.com/group/comp.lang.c++.moderated/messages/159700.html
[snip] Around the time that the standard was being ratified, programmers like Todd Veldhuizen were discovering things like expression templates and template metaprogramming, which offered far better optimization possibilities than valarray ever could. Consequently, there hasn't been much emphasis on optimizing valarray. [snip]
（注：Todd Veldhuizenというのはblitz++のヒト）
( ・∀・)つ〃∩ ヘェーヘェーヘェー．そんな経緯があったのねん．要するにvalarrayは出てくるタイミングが悪かったと．
