США испытали рельсотронTWZ: ВМС США провели испытание рельсотрона
set-frame-name, great for multi-frame workflows，更多细节参见吃瓜
An alternative approach keeps data on the heap (boxed) and uses the lowest 3 bits of the 8-byte aligned pointer as the type tag. This provides $2^3 = 8$ possible types without allocating additional inline bytes. This is called a tagged pointer.。业内人士推荐手游作为进阶阅读
class DisplayManager {