Programming languages become popular for many reasons. Sometimes, programmers on a given platform prefer a particular language, or one is institutionalized by a vendor. Most Mac OS programmers use Objective-C. Most Windows programmers use C++ and .NET languages. Most embedded-systems developers use C and C++.
Sometimes, popularity derived from technical merit gives way to fashion and fanaticism. C++, Java, and Ruby have been the objects of fanatical devotion among programmers. Sometimes, a language becomes popular because it fits the needs of its era. Java was initially seen as a perfect fit for browser-based, rich client applications. Smalltalk captured the essence of object-oriented programming (OOP) as that model of programming entered the mainstream.
Today, concurrency, heterogeneity, always-on services, and ever-shrinking development schedules are driving interest in functional programming (FP). It appears that the dominance of object-oriented programming may be over. Mixing paradigms is becoming popular, even necessary.
We gravitated to Scala from other languages because Scala embodies many of the optimal qualities we want in a general-purpose programming language for the kinds of applications we build today: reliable, high-performance, highly concurrent Internet and enterprise applications.
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