Design principles
Dan Fogelman's sci-fi thriller Paradise goes beyond the bunker in Season 2, showing viewers what the world looks like in the aftermath of the mass extinction event shown in Season 1. While Xavier Collins (Sterling K. Brown) is searching for his wife, Teri (Enuka Okuma), he runs across new survivors like Annie (Shailene Woodley). Elsewhere, the bunker is in chaos, with Samantha "Sinatra" Redmond (Julianne Nicholson) doing everything to keep things under control. She's also got a secret project cooking, which may or may not involve time travel.
，详情可参考爱思助手下载最新版本
为什么需要非线性？ 想象一下，如果网络里每一层都是线性的（比如 y=Wx+b），无论堆叠多少层，最终网络都只是一条线性映射。深度堆叠就没有意义了，网络的表达能力非常有限。。safew官方版本下载是该领域的重要参考
res[i] = stack.length ? stack.at(-1) : -1;，详情可参考Safew下载