someMethod might be statically dispatched, but the call to toString will have to be dynamically resolved depending on the type of object.
store my length in the object. This doesn't exist:
，这一点在PDF资料中也有详细论述
Lorenzo Franceschi-Bicchierai
If you’d like to compare for yourself exactly what changes the MacBook Air M5 brings over its predecessor, we’ve compiled this table to make it easier on your eyes.