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Source for wiki EmptyList version 2

author

cowan

comment

ipnr

67.158.178.7

name

EmptyList

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text

The empty list is self-evaluating in Gauche, MIT, Kawa, SISC, Chibi,
SCM, NexJ, STklos, !SigScheme, !TinyScheme, Scheme 9, Dream, Scheme 7, BDC,
Xlisp, Rep, Jscheme, Schemik, VX, Oaklisp, Sizzle, Spark, Femtolisp, Dfsch, Inlab, Owl Lisp.

Racket, Gambit, Chicken, Bigloo, Guile, Scheme48/scsh, Chez, !Ikarus/Vicare, Larceny, Ypsilon, Mosh, !IronScheme, KSi, Shoe, Elk, RScheme, UMB, Llava, SXM,  signal a syntax error.

Larceny signals a syntax warning but then treats the empty list as self-evaluating.

In XLisp, Rep, VX, `(car '())` and `(cdr '())` evaluate to the empty list, as in Common Lisp.

time

2012-05-28 06:24:59