Strategic Scala Style: Principle of Least Power

The Scala language is large and complex, and it provides a variety of tools that a developer can use to do the same thing in a variety of ways. Given the range of possible solutions to every problem, how can a developer choose which one should be used? This is the first in a series of blog posts aiming to provide style guidelines at a "strategic" level. Above the level of "how much whitespace shou