Re: Help with map match

[Adam Van Ymeren <adam@vany.ca>]

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I believe match is a macro but you need to pass map a lambda.

Try (map (lambda (a) (match a ("test" #t) ...) x) 

Or (map (match-lambda ("test" #t) ...) x) as match-lambda is a macro that expands to (lambda (a) (match a ...))


On November 29, 2018 6:13:26 PM EST, swedebugia <swedebugia@riseup.net> wrote:
>Hi
>
>I'm trying to learn how to check in guile if a node package matches one
>
>of the items in my blacklist.
>
>First version was with (member pkg-name blacklist) and it worked but 
>forces me to write down all the blacklisted packages which is tedious 
>when I can just regex match if it begins with the same name.
>
>Now i'm trying to do the same with match and I could not find any 
>examples or guides on the subject that I understood. :-/
>
>blacklist
>$1 = ("matcha" "webpack" "rollup-plugin-node-resolve" "browserify" 
>"electron" "statsd" "vega" "grunt-release" "lineman" "lineman-angular")
>
>I want the procedure to return #t if a match is found and I want it to 
>match if it begins with the same e.g. "rollup-plugin" should match 
>"rollup-plugin-node-resolve" and return #t
>Else #f
>
>This did not work:
>(use-modules (ice-9 match))
>
>(define x
>         '("ts" "test"))
>(map (match x
>         ("test") #t)
>         (else #f) x)
>
>Any ideas?
>-- 
>Cheers
>Swedebugia

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