Scala Collections

The collections framework in Scala is a high-performance and type-parametrized framework with support for mutable and immutable type hierarchies. These distinct and independent mutable and immutable type hierarchies enable switching between mutable and immutable implementations much simpler. Scala’s object-oriented collections also support functional higher-order operations such as map, filter, and reduce that let you use expression-oriented programming in collections.  You can access and use the entire Java collections library from your Scala code because Scala is a JVM language, but this is not recommended because ...

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