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Source for wiki OnePlusEx version 1

author

cowan

comment

ipnr

127.11.51.1

name

OnePlusEx

readonly

text

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

time

2014-07-12 14:00:14