- interchangeable constructs
- hive is case sensitive
- secmicolon to terminate statements
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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
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#!/bin/bash | |
# Install Spark on CentOS 7 | |
yum install java -y | |
java -version | |
yum install wget -y | |
wget http://downloads.typesafe.com/scala/2.11.7/scala-2.11.7.tgz | |
tar xvf scala-2.11.7.tgz | |
sudo mv scala-2.11.7 /usr/lib | |
sudo ln -s /usr/lib/scala-2.11.7 /usr/lib/scala |