Matthias Felleisen <matth...@ccs.neu.edu> writes: > On Nov 17, 2010, at 2:40 AM, Eli Barzilay wrote: > >> (define (alist->string alist) >> (string-join >> (for/list ([a (in-list alist)]) >> (format "~a=~a" (car a) (cdr a))) >> " ")) > > > Somewhat more 'native': > > (define (alist->string l) > (string-join > (map (lambda (x) (format "~s=~s" (car x) (cdr x))) l) " ")) > > in the sense that map preceded our for/ loops by 4 decades. > > -- Matthias
Oy, how did I get it into my head that somehow format required an output port? And somehow I missed string-join, too. Thank you, Matthias and Eli, for your succinct examples. That clears some things up. Richard _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/users
