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.

Source for wiki SetUndefinedVariable version 1

author

cowan

comment

ipnr

198.185.18.207

name

SetUndefinedVariable

readonly

text

== Attempting to set an undefined variable==

Racket, Gauche, MIT, Gambit, Bigloo, Scheme48/scsh, Guile, SISC, Chibi, SCM, Ypsilon, NexJ, STklos, KSi, !SigScheme, Shoe, !TinyScheme, Scheme 9, Dream, Scheme 7, Schemik, Elk, UMB, Sizzle, Spark, Dfsch, Inlab complain about the attempt to use `set!` on an unbound variable.

Chicken, Kawa, Chibi, Chez, !Ikarus/Vicare, Larceny, Mosh, XLisp, Rep, VX, Llava, Femtolisp do not.

Oaklisp, SXM print a warning but allow it.

Owl Lisp doesn't have variable assignment.

time

2012-06-09 02:15:23