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IBM Z/OS 虚拟机Hercules 安装及配置文档 Ver 0.7

THE BOOK OF RUBY HUW COLLINGBOURNE In this book it is my aim to guide you safely over the pitfalls and lead you through the choppy waters of Ruby’s syntax and class libraries. In the process, I’ll be exploring both the smooth, well-paved highways and the gnarlier, bumpy little byways of Ruby. By the end of the journey, you should be able to use Ruby safely and effectively without getting caught out by any unexpected hazards along the way.