// WeakMap：以 Config 对象为键，Config 不变时复用缓存
I lucked out with this Iwill XA100 v1.2 on ebay. Built in 1998, it seems to be stable for the technology it supports[1] and fits all my technical requirements. More importantly, the manual is readily available online[2].。新收录的资料是该领域的重要参考
，这一点在新收录的资料中也有详细论述
println(f); // 3.140000。新收录的资料对此有专业解读
This is why services like Heroku and Pivotal Cloud Foundry thrived back then - they offered a pain-free, albeit opinionated way to handle all this complexity. As the Pivotal haiku put it:
В Санкт-Петербурге из земли внезапно забил фонтанВ Петербурге из земли забил фонтан из-за аварии