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From: | Aaron Hill |
Subject: | Re: Scheme: Syntax for storing a variable in an alist |
Date: | Sun, 18 Oct 2020 12:58:02 -0700 |
User-agent: | Roundcube Webmail/1.4.9 |
On 2020-10-18 12:42 pm, Matthew Fong wrote:
Hello everyone, I am having a bit of an issue storing a variable in an alist, and I waswondering if you all could point out what I am doing wrong. If I write thestring directly, there's no issue retrieving it ... my-alist = #'((1 . "A") (2 . "B") (3 . "C")) value = #(ly:assoc-get 2 my-alist " error") \markup \value hymnID = "210" hymnMeter = "8.8.8.8" hymnAlist = #'(("ID" . \hymnID ) ("Meter" . \hymnMeter )) hymnValue = #(ly:assoc-get "ID" hymnAlist "error") \markup \hymnValue
Jean already covered the bit about quasi-quoting.But there is no need to do this as you can store values in an alist using dot syntax in LilyPond:
%%%% hymn.id = "643" hymn.meter = "6 6 11 6 6 11 D" \markup #(ly:assoc-get 'id hymn "no value") \markup #(ly:assoc-get 'tune hymn "no value") %%%% \hymn automatically is an alist. -- Aaron Hill
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