Scala code run from Intellij Worksheet doesn't seem to be able to find the akka actor resources.
The error is:
com.typesafe.config.ConfigException$Missing: No configuration setting found for key 'akka'
There is an opened ticket on Intellij bugtracker https://youtrack.jetbrains.com/issue/SCL-9229 with a work arround
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A function is a mapping from one set, called a domain, to another set, called the codomain. A function associates every element in the domain with exactly one element in the codomain. In Scala, both domain and codomain are types.
val square : Int => Int = x => x * x