# Run Sandbox and connect to it from SSH
ssh root@127.0.0.1 -p 2222

# Launch Spark-Shell
spark-shell --master yarn-client --driver-memory 512m --executor-memory 512m

# Mutable values
var a: Int = 5
a = a + 1
println(a)

# Immutable values
val b: Int = 7
b = b + 1 //Error
println(b)

# Type Inference
var c = 9
println(c.getClass)

val d = 9.9
println(d.getClass)

val e = "Hello"
println(e.getClass)

# Functions
def cube(x: Int): Int = {
val x2 = x * x * x
x2
}
cube(3)

def cube(x: Int) = x*x*x
cube(4)

# Anonymous Functions
val sqr: Int => Int = x => x * x
sqr(2)

val thrice: Int => Int = _ * 3
thrice(15)

# Collections
val strs = Array("This", "is", "happening")
strs.map(_.reverse)
strs.reduce(_+" "+_)