In this example we create three different types (MutableMap, MutableMap and MutableMap) of MutableMap with different ways.Function we use to initialize Maps One time run fun main() Let's create an example to create a MutableMap using mutablemapOf() function and traverse it.
Kotlin MutableMap Example - 1 traversing MutableMap It returns the value corresponding to given key, or it throws an exception if no key found in the map. It returns the value for the mention key in the map, or it returns the default value function if no such entry found for the given key.
It returns the value with corresponding mention key, or it returns default value if no such mapping for the key in the map. It returns the value corresponding to mention key, or null if no such key found in the map. It returns the total number of entities of the map It returns true if the map maps one or more keys for the given value.įun Map.containsValue(value: V): Boolean It returns the true if map contains the specified key.Ībstract fun containsValue(value: V): Boolean Operator fun Map.contains(key: K): BooleanĪbstract fun containsKey(key: K): Boolean This function is used to removes all the elements from the map. It removes the key and value entities from the map only if it exist in the map. Open fun remove(key: K, value: V): Boolean It removes the specified key with its corresponding value from the map. This updates the current map with key/value pairs from the mentioned map. It adds the given value with the specified key in the map. This collection may contain duplicate values. This returns all the values of MutableCollection in the current map. This returns all the keys of MutableSet in this map. This returns a MutableSet of all its key and value pairs in the map.
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