Context:
whenever it introduces some new O-O mechanism, be it garbage collection (and
other approaches to memory management for object-oriented computation), dynamic
binding, genericity or repeated inheritance, it will do so based on the
knowledge that the mechanism may be implemented at a reasonable cost in time
and in space; and whenever appropriate it will mention the performance
consequences of the techniques studied.
虽然这句子很长，但我只想问be it在这边的作用是什么? 如果是我写的话，我会把be it
改成including.
ps: garbage collection, dynamic binding...balala是属于O-O的其中几种mechanism