Hi Hongwei, On Thu, Sep 1, 2016 at 1:02 PM, gmhwxi <[email protected]> wrote: > I think you need to try it on a realistic example in order to get a sense > as to how it works in practice. My suspicion is that the at-view style may > not be adequate for a "complex" struct. I would go with the aptr-style, > which > allows you to take advantage of the support for overloading in ATS.
I think I should firstly choose at-view-style, because it's good for a struct has another struct as member. Using aptr-style, the code having such struct is following: https://github.com/jats-ug/practice-ats/tree/53cffb10c1f46603201fbff178e6c1a43eb20e85/mutual_struct3 https://github.com/jats-ug/practice-ats/blob/53cffb10c1f46603201fbff178e6c1a43eb20e85/mutual_struct3/main.dats#L43 Above code read whole struct member `f` in `struct bar` to read int member `b` in `struct foo`. It can not access the member only. It means needing much memory access. If using the other style of setter/getter for struct in struct, this problem may be fixed. However, It will drop coherence on getter/settter. On the other side, using at-view-style, the code having such struct is following: https://github.com/jats-ug/practice-ats/tree/53cffb10c1f46603201fbff178e6c1a43eb20e85/mutual_struct2 https://github.com/jats-ug/practice-ats/blob/53cffb10c1f46603201fbff178e6c1a43eb20e85/mutual_struct2/main.dats#L31 Above code can directly read/write int member `b` in `struct foo` in `struct bar`. I think this problem has its roots in ATS record/struct can't keep at-view for pointer member in themselves. Then we only need setter/getter for pointer member in the record/struct. Members without pointer should be accessed by normal method in ATS language. Of course, if I know mistake on choosing at-view-style, I'll secondly choose your aptr-style. Best regards, -- Kiwamu Okabe at METASEPI DESIGN -- You received this message because you are subscribed to the Google Groups "ats-lang-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/ats-lang-users. To view this discussion on the web visit https://groups.google.com/d/msgid/ats-lang-users/CAEvX6d%3DnRu6TmY1uwyYgyChO1q8no6y7mRhJS7169nqxTc4yhA%40mail.gmail.com.
