Currently, the run-time representation of a struct doesn't include field names. In that sense, field names don't exist at run time, and all fields are accessed by position.
We plan to change the structure-type core to add field names, but it hasn't happened, yet. At Wed, 10 Dec 2014 04:36:50 -0500, Benjamin Greenman wrote: > I'm hoping to implement the following function to access arbitrary struct > fields. > > ;; Compute `[st]-field-name st`, where > ;; [st] is the name of the struct type of `st` > (define (runtime-get st field-name) > (-> struct? string? any/c) > (error "not implemented")) > > Is this possible? I fear I can't use a macro because I don't know exactly > which struct I'll get at runtime. > ____________________ > Racket Users list: > http://lists.racket-lang.org/users ____________________ Racket Users list: http://lists.racket-lang.org/users
