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Functions

In: Scala Programming for Big Data Analytics

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  • Irfan Elahi

Abstract

When you are programming, you are solving a specific problem. The nature and complexity of that problem can vary. It can be as simple as finding a square root of a function or it can be as complex as writing data cached in RAM to multiple nodes in your environment in a parallel fashion (hint: Apache Spark). In either case, you write code and expressions that help you address that problem in your program. When you are in the mindset of programming, you think about what your input is and what your output is. In the case of finding the square root of a number, the number is your input and the square root of that number is your output. Then you write statements that help you address that problem. This concept lays the foundation of functions that we will explore in detail in this chapter.

Suggested Citation

  • Irfan Elahi, 2019. "Functions," Springer Books, in: Scala Programming for Big Data Analytics, chapter 0, pages 103-122, Springer.
    • Handle: RePEc:spr:sprchp:978-1-4842-4810-2_8
    DOI: 10.1007/978-1-4842-4810-2_8
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