kotlin-stdlib / kotlin.collections / plusAssign plusAssign Common JVM JS Native 1.0 operator fun <K, V> MutableMap<in K, in V>.plusAssign( pair: Pair<K, V>)(source) Appends or replaces the given pair in this mutable map. Common JVM JS Native 1.0 operator fun <K, V> MutableMap<in K, in V>.plusAssign( pairs: Iterable<Pair<K, V>>)(source) Appends or replaces all pairs from the given collection of pairs in this mutable map. Common JVM JS Native 1.0 operator fun <K, V> MutableMap<in K, in V>.plusAssign( pairs: Array<out Pair<K, V>>)(source) Appends or replaces all pairs from the given array of pairs in this mutable map. Common JVM JS Native 1.0 operator fun <K, V> MutableMap<in K, in V>.plusAssign( pairs: Sequence<Pair<K, V>>)(source) Appends or replaces all pairs from the given sequence of pairs in this mutable map. Common JVM JS Native 1.0 operator fun <K, V> MutableMap<in K, in V>.plusAssign( map: Map<K, V>)(source) Appends or replaces all entries from the given map in this mutable map. Common JVM JS Native 1.0 operator fun <T> MutableCollection<in T>.plusAssign( element: T)(source) Adds the specified element to this mutable collection. Common JVM JS Native 1.0 operator fun <T> MutableCollection<in T>.plusAssign( elements: Iterable<T>)(source) Adds all elements of the given elements collection to this mutable collection. Common JVM JS Native 1.0 operator fun <T> MutableCollection<in T>.plusAssign( elements: Array<T>)(source) Adds all elements of the given elements array to this mutable collection. Common JVM JS Native 1.0 operator fun <T> MutableCollection<in T>.plusAssign( elements: Sequence<T>)(source) Adds all elements of the given elements sequence to this mutable collection.