>>716 CLEAN LANGUAGE REPORT VERSION 2.0 Section 9.1: Basic Idea Behind Uniqueness Typingより
> It is guaranteed by the type system that fwritec has private access to the file such that overwriting the file can be done
> without violating the functional semantics of the program. The resulting file is unique as well and can therefore be passed
> as continuation to another call of e.g. fwritec to make further writing possible.
脳ミソが透明だったのは707ではなく
>>708-711 >>714-715 だったようだな。(禿藁