苏联曾开发出名为“周界”（Perimeter）的自动核报复系统，西方分析人士称其为“死手”（Dead Hand）。此系统的设计目的在于保证即使遭受斩首式打击，威慑依然存在，确保敌人无法轻易摧毁报复能力。
setSpeed(currentSpeed - 1.0); // Starvation, back off
。关于这个话题，heLLoword翻译官方下载提供了深入分析
Мария Захарова. Фото: Сергей Гунеев / РИА Новости
Stanley Quencher FlowState Tumbler, 40 oz
To build tools like that, you yourself need to understand the various ways you can directly interface with the terminal. While the minimal command-line we implemented above is obviously incomplete and not robust, it is straightforward (if tedious) to flesh out the few-dozen features most people expect a command-line to have. After that, you're on par with what's out there, and you are free to implement more features and rich interactions beyond what existing libraries like Readline/Jline provide.