quick question which i feel like i should know the answer to: if i have an immutable map and call .t...

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[Zimri Leisher]

quick question which i feel like i should know the answer to: if i have an immutable map and call .toMutableMap on it and change the resulting map, does it change the first immutable one?

[nanodeath]

easy to click through to the source in IntelliJ 🙂 but I think all the .to* methods make a copy. even Map#toMap makes a copy.

[nanodeath]

public fun <K, V> Map<out K, V>.toMutableMap(): MutableMap<K, V> = LinkedHashMap(this)

[Zimri Leisher]

yeah actually that was my first thought but for some reason its only showing decompiled bytecode

[Zimri Leisher]

it wont let me see the source ;-;

[Zimri Leisher]

thats another unrelated issue

[Zimri Leisher]

and alright thanks!!

[Ryan]

normally you can provide a trailing implementation of the map you want if your worried about rehashing the map

[Zimri Leisher]

hmm, what's a trailing implementation?

[Ryan]

not sure how you are making your map

[Ryan]

but you can provide the map

[Ryan]

https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.collections/associate-by-to.html

[Zimri Leisher]

i see, thanks! I think i figured it out another way though. appreciate the help