François Sarradin fsarradin

## Applied-FP-with-Scala.md

      
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                fsarradin
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              June 7, 2018 12:59
                — forked from jdegoes/Applied-FP-with-Scala.md
            
          
    Applied Functional Programming with Scala - Notes

Copyright © 2016-2018 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

  
## Option.java
package my.util;

import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.NoSuchElementException;
import java.util.function.Function;

public abstract class Option<T> implements Iterable<T> {
	package my.util;

	import java.util.Collections;
	import java.util.Iterator;
	import java.util.List;
	import java.util.NoSuchElementException;
	import java.util.function.Function;

	public abstract class Option<T> implements Iterable<T> {