kotlin-stdlib/kotlin.collections/MutableCollection/add

add

abstract fun add(element: E): Boolean

Adds the specified element to the collection.

Return

true if the element has been added, false if the collection does not support duplicates and the element is already contained in the collection.

abstract fun add(element: E): Boolean

Adds the specified element to the collection.

Return

true if the element has been added, false if the collection does not support duplicates and the element is already contained in the collection.

abstract fun add(element: E): Boolean

Adds the specified element to the collection.

Return

true if the element has been added, false if the collection does not support duplicates and the element is already contained in the collection.

abstract fun add(element: E): Boolean

Adds the specified element to the collection.

Return

true if the element has been added, false if the collection does not support duplicates and the element is already contained in the collection.