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Powerlevel10k

Advanced Functional Programming with Scala - Notes

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

Hive Syntax Cheat Sheet

General rule

interchangeable constructs
hive is case sensitive
secmicolon to terminate statements

	#!/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

	[
	{
	"mode": "NULLABLE",
	"name": "visitorId",
	"type": "INTEGER"
	},
	{
	"mode": "NULLABLE",
	"name": "visitNumber",
	"type": "INTEGER"