Abstract
Scala fuses object-oriented and functional programming in a statically typed programming language. It is aimed at the construction of components and component systems. This paper gives an overview of the Scala language for readers who are familar with programming methods and programming language design.

Introduction
True component systems have been an elusive goal of the software industry. Ideally, software should be assembled from libraries of pre-written components, just as hardware is assembled from pre-fabricated chips. In reality, large parts of software applications are written from scratch, so that software production is still more a craft than an industry.

Components in this sense are simply software parts which are used in some way by larger parts or whole applications. Components can take many forms; they can be modules, classes, libraries, frameworks, processes, or web services. Their size might range from a couple of lines to hundreds of thousands of lines. They might be linked with other components by a variety of mechanisms, such as aggregation, parameterization, inheritance, remote invocation, or message
passing.