在 2012年8月7日星期二UTC-4下午9时11分58秒，Warren Lynn写道： > > > This construct is not very good. make-record is not first-class (It >> cannot be used as an argument to a function). >> Its first argument is not first-class (it has to be statically the >> name of a class). >> >> > Good point. I am not happy with my own version because it is a pure > run-time function with run-time dispatching all the time. What I am hoping > for is the compiler can be smart enough to just do compile time dispatch > for the static case, but still do run-time dispatching for dynamic cases. > So it will still be a first-class function. The only difference is the > compiler takes a short-cut for the static cases. The programmer should see > no difference. > > >> It exposes an implementation detail to client code (the name of a class). >> >> > I agree that is true. But as I said before, that may not matter for many > cases (for me, that is the vast majority). I am willing to trade the > flexibility for better code organaization and readability. If flexibility > is all free, of course that will be ideal. But flexibility often comes with > a price, sometimes in terms of performance, sometimes in terms of code > readability and etc. One size fits all is too simplistic to me. > > >
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