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Source for wiki MultipleValues version 3

author

cowan

comment

ipnr

108.182.78.175

name

MultipleValues

readonly

text

I asked my
usual suite of Schemes to evaluate `(+ 1 (values 2 3))`.

Racket, MIT,
Gambit, Scheme48/scsh, Kawa, SISC, Chibi, SCM, Chez, !Ikarus/Vicare, Ypsilon,
!IronScheme, KSi, !SigScheme, Shoe, SXM, Sizzle, Spark, Femtolisp, Owl Lisp
all report errors, either of the form "Single
value expected, multiple values received", or else a low-level error
reflecting how multiple values are represented.

Gauche, Chicken,
Bigloo, Guile, Larceny, Mosh, NexJ, STklos, S7, XLisp, Dfsch reduce the multiple values to a
single value.  Of these, Guile and NexJ treat zero values passed to a single-valued continuation as an error, Bigloo transforms it to 0, XLisp and Dfsch as the empty list, and the rest as their implementation-specific "undefined" value.

!TinyScheme, Scheme 9, Dream, Rep, Schemik, Elk, UMB, VX, Oaklisp, Inlab don't support `values`.

time

2013-05-24 13:06:19