Pavel Perikov p-pavel

## Advanced-FP-with-Scala.md

      
        
          
            
              
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                winitzki
                / Advanced-FP-with-Scala.md
            
            
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              December 15, 2017 22:56
                — forked from jdegoes/Applied-FP-with-Scala.md
            
          
        
      
        
  
      
    Advanced Functional Programming with Scala - Notes

Copyright © 2016-2017 Fantasyland Institute of Learning. All rights reserved.
1. Mastering Functions

A function is a mapping from one set, called a domain, to another set, called the codomain. A function associates every element in the domain with exactly one element in the codomain. In Scala, both domain and codomain are types.
val square : Int => Int = x => x * x