Racket is een ontwikkeltaal waarmee andere ontwikkeltalen ontwikkeld kunnen worden. Daarnaast kan gewoon in Racket zelf ontwikkeld worden. Het stond eerder bekend onder de naam PLT Scheme en komt uit de Lisp-Scheme-familie. Voor de achtergrond verwijzen we naar het manifest, geschreven onder leiding van Matthias Felleisen. De ontwikkelaars hebben versie 8.7 van Racket uitgebracht en de changelog van die uitgave ziet er als volgt uit:
Changes in Racket version 8.7:
- Typed Racket offers Shallow and Optional modes for its gradual types. These modes lower the cost of interacting with untyped code, but provide less protection against buggy interactions. (see https://docs.racket-lang.org/ts-reference/behavior-of-types.html )
- Racket uses Unicode 14.0 for character and string operations, and includes grapheme operations. DrRacket supports emojis. (see https://docs.racket-lang.org/gui/editor-overview.html#%28part._graphemes%29 )
- Racket supports RV64G (RISC-V).
- Programmers can disable definition shadowing using
(#%declare #:require=define). (see https://docs.racket-lang.org/reference/module.html#%28form.%28%28quote.~23~25kernel%29._~23~25declare%29%29 )- The module dependency graphs available using raco dependencies-graph and DrRacket’s Module browser are faster and have new package filtering support. (see https://docs.racket-lang.org/drracket/module-browser.html#%28idx._%28gentag.39.%28lib._scribblings%2Fdrracket%2Fdrracket..scrbl%29%29%29 )
- DrRacket is more responsive when killing programs that produce a lot of output.
- Plot 3D allows negative altitude values (e.g., looking at the plot from “below”). (see https://docs.racket-lang.org/plot/plotting.html#%28def._%28%28lib._plot%2Fmain..rkt%29._plot3d%29%29 )
- The
scriblib/bibtexandscriblib/autobiblibraries support DOIs. (see https://docs.racket-lang.org/scriblib/autobib.html#%28def._%28%28lib._scriblib%2Fautobib..rkt%29._make-bib%29%29 )- There are many other repairs and improvements!
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