#collections #maps #scala

If we want to add a key-value pair to a Map, we can use the operator + as follows:

A += ('I' -> 1)
A += ('J' -> 5)
A += ('K' -> 10)
A += ('L' -> 100)
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Scala Maps
h keys and values. val colors = Map("red" -> "#FF0000", "azure" -> "#F0FFFF") While defining empty map, the type annotation is necessary as the system needs to assign a concrete type to variable. <span>If we want to add a key-value pair to a Map, we can use the operator + as follows: A += ('I' -> 1) A += ('J' -> 5) A += ('K' -> 10) A += ('L' -> 100) Basic Operations on Map: All operations on maps can be expressed in terms of the following three methods: MethodsDescriptionkeysThis method returns an iterable containing each key in the