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. For a version of this page that may be more recent, see ForceNonPromise in WG2's repo for R7RS-large.


2014-12-28 08:41:24

The Schemes were tested to see what happens when force is applied to a non-promise:

force returns its argument: Racket, Gauche, Gambit, Chicken, Kawa, NexJ, STklos, TinyScheme, RScheme, XLisp, UMB, Oaklisp, SXM

force signals an error: MIT, Bigloo, Scheme48/scsh, Guile, SISC, Chibi, SCM, Chez, Vicare, Larceny, Ypsilon, Mosh, IronScheme, SigScheme, Scheme 9, Dream, BDC, Schemik, Elk, VX, Sizzle, Spark, Inlab, Owl Lisp, Sagittarius

force does not exist: KSi, Shoe, S7, Rep, Llava, FemtoLisp, Dfsch

See also DisjointPromises.