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containsKey

open fun containsKey(key: K): Boolean

Overrides HashMap.containsKey

Overrides Map.containsKey

Platform and version requirements: JS

Returns true if the map contains the specified key.

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Licensed under the Apache License, Version 2.0.
https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.collections/-linked-hash-map/-linked-hash-map/contains-key.html