Anyone know of a collection version of `Map<K, ...

# codereview

[Dominaezzz]

Anyone know of a collection version of Map<K, V>.putIfAbsent(key: K, value: V)? putAll overrides existing values sadly.

[Shawn]

Would you mind clarifying what you mean by a “collection version?”

[Shawn]

oh, I see, you want putIfAbsent(other: Map<K, V>)

[Dominaezzz]

I guess something like Map<K, V>.putIfAbsent(other: Map<K, V>)?

[Dominaezzz]

lol

[Dominaezzz]

yeah

[Shawn]

you could just reverse the order of putAll, couldn’t you?

[Dominaezzz]

Hmmm, if both were mutable.

[Dominaezzz]

I guess I need MutableMap<K, V>.putIfAbsent(other: Map<K, V>) 😅 .

[Shawn]

you could maybe use + in the preferred order?

[Dominaezzz]

I need to do it multiple times to build a big map. I'd have to use var 😅.

[Shawn]

gotcha

[Shawn]

here’s a somewhat cursed idea - what if you fold over a collection of all your maps

[Shawn]

or maybe reduce into a mutableMap or something

[Dominaezzz]

I'm more or less doing that already. I might be trying to hard to shrink this code.

[Dominaezzz]

It's here https://github.com/Dominaezzz/kgl/blob/8fa7fd64baca04df513007518b23a3ca68e3a231/buildSrc/src/main/kotlin/codegen/vulkan/GenerateVulkanTask.kt#L130

[Dominaezzz]

Am I trying too hard?

[Shawn]

¯\_(ツ)_/¯ hm

[Shawn]

I couldn’t tell you from a quick glance, being entirely honest

[Dominaezzz]

Ha okay. Thanks for helping anyway!