This site is a static rendering of the Trac instance that was used by R7RS-WG1 for its work on R7RS-small (PDF), which was ratified in 2013. For more information, see Home. For a version of this page that may be more recent, see OnePlusEx in WG2's repo for R7RS-large.

One­Plus­Ex

cowan
2014-07-12 14:00:14
1history
source

This experiment finds out whether +1x is a valid identifier in the Scheme implementations. It is invalid in all versions of the Scheme standard. We also investigate whether add1 is a known procedure.

+1x valid, add1 exists: Racket, Chicken, SISC, Sizzle

+1x valid, add1 does not exist: Gauche, MIT, Gambit, Bigloo, Guile, Kawa, SCM, Ypsilon, JScheme, STklos, Shoe, TinyScheme, Scheme 9, BDC, XLisp, Rep, Schemik, Elk, Llava, FemtoLisp, Inlab, Chibi

Syntax error, add1 exists: Vicare, IronScheme, RScheme, SXM

Syntax error, add1 does not exist: Scheme48/scsh, Larceny, Mosh, KSi, SigScheme, UMB, Dfsch, Foment

1+x is treated as 1 +x, add1 does not exist: NexJ, Picrin, Owl Lisp