戻る

マジかこれ、いつからだ？

> Unlike in the old days,
* an object's object ID (that a user can query using `Object#object_id`)
* is no longer its physical address represented using Ruby level integers.
* It is now a monotonic-increasing integer unrelated to the underlying
* memory arrangement.

https://github.com/ruby/ruby/blame/1a6a7c699c4f66396d3f314423fee515ab8b4b19/include/ruby/internal/fl_type.h#L284-L292