Kotlin Wrappers API Reference
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Kotlin Wrappers API Reference
kotlin-js
/
js.collections
/
JsMap
/
Companion
Companion
web
object
Companion
(
source
)
Members
Functions
group
By
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web
fun
<
T
:
ERROR CLASS: Symbol not found for JsAny
,
K
:
ERROR CLASS: Symbol not found for JsAny?
?
>
groupBy
(
items
:
ReadonlyArray
<
T
>
,
keySelector
:
(
value
:
T
,
index
:
Int
)
->
K
)
:
JsMap
<
K
,
ReadonlyArray
<
T
>
>
MDN Reference