Precompute size of array at init
Precompute size of array at init

truongdq/chainer,chainer/chainer,benob/chainer,okuta/chainer,niboshi/chainer,ysekky/chainer,aonotas/chainer,ktnyt/chainer,pfnet/chainer,keisuke-umezawa/chainer,ronekko/chainer,chainer/chainer,hvy/chainer,hvy/chainer,AlpacaDB/chainer,wkentaro/chainer,tscohen/chainer,cupy/cupy,okuta/chainer,wkentaro/chainer,t-abe/chainer,rezoo/chainer,cupy/cupy,kikusu/chainer,niboshi/chainer,ktnyt/chainer,ktnyt/chainer,AlpacaDB/chainer,cemoody/chainer,niboshi/chainer,keisuke-umezawa/chainer,chainer/chainer,hvy/chainer,muupan/chainer,chainer/chainer,wkentaro/chainer,jnishi/chainer,t-abe/chainer,tigerneil/chainer,Kaisuke5/chainer,kashif/chainer,ytoyama/yans_chainer_hackathon,niboshi/chainer,kikusu/chainer,hvy/chainer,jnishi/chainer,jnishi/chainer,cupy/cupy,muupan/chainer,keisuke-umezawa/chainer,jnishi/chainer,sinhrks/chainer,kiyukuta/chainer,delta2323/chainer,1986ks/chainer,ktnyt/chainer,benob/chainer,laysakura/chainer,tkerola/chainer,anaruse/chainer,okuta/chainer,okuta/chainer,minhpqn/chainer,wkentaro/chainer,cupy/cupy,sinhrks/chainer,sou81821/chainer,truongdq/chainer,keisuke-umezawa/chainer