#lang typed/racket (: S->F : String -> (Option Float)) (define (S->F s) (define n (string->number s)) (and (flonum? n) n))
I assume you mean to convert strings into floats, if possible. But you may like the funny answers better -- Matthias On Feb 13, 2013, at 9:49 PM, Ray Racine wrote: > What is the most efficient way to write the following method in TR? > > (: S->F (String -> (Option Float))) > > > ____________________ > Racket Users list: > http://lists.racket-lang.org/users ____________________ Racket Users list: http://lists.racket-lang.org/users
