survey question: what sorts of things have you used “smart constructors” for? (smart constructor == a function you use to construct instances of a struct instead of the normal default constructor)

emoji react to any of the following answers:

• keyword arguments

• default values for fields

• “normalizing” field values in some way

• other? please share details

managing de bruijn indexes

@samth interesting, got a link?

typed-racket/rep/type-rep, scroll down

see make-Poly and make-Mu

this file, right? https://github.com/racket/typed-racket/blob/master/typed-racket-lib/typed-racket/rep/type-rep.rkt

Factory pattern?

sorta