When writing iformat.sscm, I'm using sweet-expressions (of course) and I was
struck at how cleanly this particular function could be expressed:
; Return #t if x should be represented using curly-infix notation {...}.
define represent-as-infix?(x)
. and
. . pair? x
. . symbol? car(x)
. . memq car(x) infix-operators
. . list? x
. . {length(x) >= 3}
. . {length(x) <= 6}
I think this is pretty clean, and I think it shows we're on the right track.
--- David A. Wheeler
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