Scala Programming for Big Data Analytics : Get Started With Big Data Analytics Using Apache Spark

© Irfan Elahi 2019

I. ElahiScala Programming for Big Data Analyticshttps://doi.org/10.1007/978-1-4842-4810-2_8

8. Functions

Irfan Elahi¹  

(1)

Notting Hill, VIC, Australia

 

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 ...