Should we make this into a meta-language? #lang colon-kw racket (define (a:b a :b c) (+ a c)) (a:b -1 :b -5)
That way it would not be a change to racket and it wouldn't break everything, but those who want it can have it. > On Oct 14, 2015, at 7:51 AM, Jay McCarthy <[email protected]> wrote: > > It is simpler than a reader parameter: > > #lang racket/base > > (define read-colon-keyword > (case-lambda > [(ch port) > (string->keyword (symbol->string (read/recursive port)))] > [(ch port src line col pos) > (datum->syntax #f (read-colon-keyword ch port) > (list src line col pos))])) > > (define (make-colon-keyword-readtable) > (make-readtable (current-readtable) > #\: > 'non-terminating-macro > read-colon-keyword)) > > (module+ test > (require rackunit) > (define (reads in out) > (check-equal? (read (open-input-string in)) out)) > (parameterize ([current-readtable (make-colon-keyword-readtable)]) > (reads "a:b" 'a:b) > (reads ":a" '#:a) > (reads "#:a" '#:a))) > > On Wed, Oct 14, 2015 at 7:40 AM, Robby Findler > <[email protected]> wrote: >> It would not be too hard, I believe, to add a parameter to the reader >> so that symbols starting with colons read the same as keywords, and >> then to build a language like s-exp and at-exp that would let you use >> that notation in a fairly seamless and interop-friendly way. Even >> getting syntax coloring shouldn't be too hard. >> >> >> Robby >> >> >> On Wed, Oct 14, 2015 at 12:12 AM, Neil Van Dyke <[email protected]> wrote: >>> I think that Racket 6.3 would be a great time to make `:abc` read the same >>> as `#:abc`. >>> >>> For those of us who are pained deeply by `#:abc`, being able to use `:abc` >>> would be a big aesthetic improvement for Racket. >>> >>> Neil V. >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "Racket Developers" 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]. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/racket-dev/561DE446.4070905%40neilvandyke.org. >>> For more options, visit https://groups.google.com/d/optout. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Racket Developers" 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]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/racket-dev/CAL3TdONVr2%3DVr86PE6Tbjj_hQP%3DCpcdkdoKbLyP%3DLgpfVjjvmw%40mail.gmail.com. >> For more options, visit https://groups.google.com/d/optout. > > > > -- > Jay McCarthy > Associate Professor > PLT @ CS @ UMass Lowell > http://jeapostrophe.github.io > > "Wherefore, be not weary in well-doing, > for ye are laying the foundation of a great work. > And out of small things proceedeth that which is great." > - D&C 64:33 > > -- > You received this message because you are subscribed to the Google Groups > "Racket Developers" 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]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/racket-dev/CAJYbDanh%3DQ%2BEqYeXA%2Be%2BabSndPYTMupCSLr09WV6u5w1aWkkDg%40mail.gmail.com. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Racket Developers" 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]. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-dev/AF8AFD4D-96B5-4BB2-9DE1-7E9903C91037%40knauth.org. For more options, visit https://groups.google.com/d/optout.
