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Hazel :pleadingcat:

to answer questions about increasing the length & using negative values:
3 August at 23:54 | Open on social.besties.house
11 comments
sirsegv :heart_clockwork:

@h@social.besties.house what if you use floats? ​:blobcatthinkowo:​

4 August at 0:11 | Open on misskey.fryer.net.au
Lily

@h
> const array
> modifies it

wtf javascript

yea ik it's probably shallow immutably like zig..

but that implies that the length is stored behind a pointer??

4 August at 0:47 | Open on glaceon.social
Hazel :pleadingcat:

@lily arrays and objects do this in js yes. what const means is you cannot change it with the = statement. you can push to an array, pop elements off, you can access properties of objects and methods on them and change all of them- but you cant go and do obj = {something: “else”}. practically its constant for numbers and strings.
However- there is a way to have it constant at a deeper level: developer.mozilla.org/en-US/do

4 August at 0:50 | Open on social.besties.house
Hazel :pleadingcat:

@lily
const obj = {}
obj.whatever = “i can do this”
obj = { butICannot: “do this” }

const arr = []
arr.push(“this is fine!”)
arr = [“but this will throw.”]

it is Just the = on the variable itself, none of its fields or anything is constant

4 August at 0:53 | Open on social.besties.house
Hazel :pleadingcat:

@lily what i find more weird honestly is how strict strings and numbers are. cause- why doesnt this work? strings are arrays of characters why are they more constant than normal arrays?
4 August at 1:11 | Open on social.besties.house
rini ☔

@lily @h const in js is a lie, it only means you can't reassign to the variable
an array is just an object, so you can mutate any property in it (or even add more, which is honestly more cursed)

4 August at 0:52 | Open on wetdry.world
rini ☔

@lily @h node even displays that properly oml
4 August at 0:55 | Open on wetdry.world
Hazel :pleadingcat:

@rini @lily yep, its just showing all key value pairs of the array and hiding the numbered keys. and those keys are actually strings btw not numbers, kinda
4 August at 0:59 | Open on social.besties.house
rini ☔

@h @lily yeah the indices are all treated as strings (but optimised internally). by the spec arrays are "exotic objects", which means their impl can do weird things (length being set automatically when indices are added)

also fun fact most array methods dont actually require an array, so you can do [].join.call({ 0: "a", 1: "b", length : 2 }, ", ")

4 August at 1:20 | Open on wetdry.world
IAG

@rini @lily @h Java's final qualifier is the same

4 August at 1:07 | Open on wetdry.world
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