You can write (match l1 [`(1 2 ,(? (lambda (x) (equal? x a)))) #t] [_ #f])
Robby On Friday, March 9, 2012, rob cook wrote: > That is, without using a macro or eval. Id like to do: > > (define a 4) > (define l1 '(1 2 3)) > (match l1 > (`(1 2 ,a) #t) > (_ #f)) > > So that this example would result in #f, and #t if a bound to 3. > > Since of course match has its own quasiquote behavior, this does not seem > possible w/o making a macro for "dynamic" match, or building the s-exp and > using eval (yuck!). > > Is this correct, or have I missed something obvious? > > Thnx > Rob >
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