To Mr. Vincent: Thanks for telling me.
Yeah, I've already checked `math/array' library. But it says it is basically for typed racket, and I was not sure it is suitable for game writing in order to manage the location of the objects; so this time I decided to skip to use the library. To Mr. Hendershott: I try keeping to avoid "I-wanna-write-a-macro-anyway" disease; but this time I likely catch the disease.... Especially syntax-rule() with recursion occasionally seems much easier to write a function with recursion; so this time, the idea of macro ghost possessed and didn't leave me.... Anyway, thanks guys! 2014-02-08 Greg Hendershott <[email protected]>: > > list* ・・・・・・To be honest, I've not seen this for a long time. I've > forgotten > > its existence. > > Yeah I don't think I've ever used list* except as part of that apply idiom: > > (define (f a b . more) > ...) > > (apply f (list* a b more)) > > > Anyway, thanks. Now I don't need to write the macro. > > Best-case is not needing to write a macro. But if you do need to, and > it's not working, feel free to ask on the list. Many here happy to > help. >
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