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Vector: assoc exception about mori HOT 4 CLOSED

djcoin avatar djcoin commented on August 17, 2024
Vector: assoc exception

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Comments (4)

swannodette avatar swannodette commented on August 17, 2024

Yes this isn't a bug, rest and drop and are sequence fns, you'll get back a sequence not a vector. If you want to drop elements and preserve the type look at subvec and pop or use the reducers functionality (sorry not documented yet).

var v1 = _.vector(4, 5); 
var v2 = _.pop(v1);
var v3 = _.assoc(v2, 0, 'b');

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djcoin avatar djcoin commented on August 17, 2024

Thanks dnolen for your quick answer :)

I was indeed checking http://clojure.github.io/clojure/clojure.core-api.html#clojure.core/subvec.
pop is in the lib but subvec doesn't seem to be.
Also, I think zipper may help me to do this (pretending i'm using the head of a vector then get a new vector with its head changed).

By the way, I saw that dissoc (among other functions) is not documented. I know it may not be your top priority and that it may be sufficient to look up the clojure doc, just wanted to let you know !

Thanks

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swannodette avatar swannodette commented on August 17, 2024

Oops missing subvec is an oversight. I'll also add docs for dissoc. Thanks for the report!

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swannodette avatar swannodette commented on August 17, 2024

subvec added and docs for dissoc included as well as a few other missing things.

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