How do I get data out of a Uint8Array in ClojureScript?

Question

I am getting a MIDI message from a midiAccess object as an Uint8Array in a ClojureScript site but I can't seem to convert it to something I can get values from. (js/console.log message) generates Uint8Array(3) [128, 65, 0] in the browser console. Actually, 'first' on the message gets the first value, but then 'second' does not. Using js->clj doesn't seem to convert it into anything usable. How do I wrangle the data out of it? I tried js->clj but that seemed to keep it the same.

Answer 1

Here are some examples:

(let [ui8a (Uint8Array.from [0 1 2 3 4 5])]

then

ui8a              => #object[Uint8Array 0,1,2,3,4,5]

(.-length ui8a)   => 6
(first ui8a)      => 0
(second ui8a)     => 1
(aget ui8a 3)     => 3

(into [] ui8a)    => [0 1 2 3 4 5]  ; either one works
(vec ui8a)        => [0 1 2 3 4 5]

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