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cowan

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173.13.139.236

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DotComma

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Given `b` => 312, what is the value of `(a .,b)`?

Guile, Bigloo, Shoe, Dream, Scheme 7, Elk, Sizzle, Dfsch:  `(a .,b)`, treating `.,b` as a symbol.

Racket, Gauche, MIT, Scheme48/scsh, Kawa, Chibi, SCM, Chez, STklos, KSi, Scheme 9, BDC, Rep, Schemik, Oaklisp, !FemtoLisp, Inlab, Owl Lisp (and Common Lisp): `(a . 312)`.

Chicken: `(a |.| 312)`.

!SigScheme (which explicitly calls it a compatibility issue), Vicare, Ypsilon, Mosh, and probably the other R6RS systems: syntax error.

!TinyScheme, XLisp, SXM: no support for quasiquote.

time

2013-04-14 12:28:57