Clojurians Log v2
squint 2024-10-09
a quick question about destructuring, I noticed that if I have something like
(let [m {[1 2] :foo}]
(doseq [[[x _ y] v] m]
(println x y v)))[x _ y] because the comma is treated as an element, is that intentional or should I make an issue?
comma?
yeah you end up with a vector of [1 , 2]
can you paste the comma expression here? https://squint-cljs.github.io/squint/?src=KGxldCBbbSB7WzEgMl0gOmZvb31dCiAgICAgIChkb3NlcSBbW1t4IF8geV0gdl0gbV0KICAgICAgICAocHJpbnRsbiB4IHkgdikpKQ%3D%3D and hit share, so I can see what you mean?
oh I see. This is not a bug but a limitation of JS objects.
{[1 2] 3}{"1,2": 3}JS objects can only contain string keys
if you want a data structure that can contain vectors, you can use js/Map but note that key lookups don't work for arrays unless they are the same object
ok yeah forgot about that bit dealing with js
lol probably best to just use string keys, might be worth mentioning in the differences with ClojureScript section actually
it's obvious once you realize why, but took me a bit to figure out what was happening
ah nice, in my case I actually did want a mutable data structure for performance, just got tripped up on the destructuring
kcool
but good to know it's trivial to use stuff like immutable.js
I'm really liking how smooth the interop with js ecosystem is compared to ClojureScript
Hi! do we have a nice example about how to work with promesa in squnit?
it's not necessary to use promesa in squint, since squint supports async/await
(let [v (js-await (some-promise))]
(inc v)Squint https://squint-cljs.github.io/squint/?src=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%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%2FKSkKICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgKGZpbHRlciB0cnVlPykKICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgKGRvYWxsKQogICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAoY291bnQpKV0KICAgICAgKGFzc29jISBjZWxsIDphbGl2ZT8KICAgICAgICAgICAgICAoaWYgYWxpdmU%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 by @yogthos