Index

A

Any class, 21
AnyRef, 21-22, 24-26
AnyVal, 21-22, 30

B

bounded types, 115, 121, 122
bottom type, 26, 27

C

CFR, decompiler, 44
call-by-name, 149-150
companion object, 55, 63-66
contravariance, 34, 135-136
constructor, auxiliary, 58-59, 71
constructor, primary, 52, 55-59
covariance, 34, 115, 135

D

defining values, 11
default value, 35, 59, 60
defining functions, 12
diamond operator, 116

E

expressions vs. statements, 98

F

function literal, 35, 86, 145
functor, 186, 212
for comprehension, 36, 109, 187, 191-196

H

higher-order function, 4, 146-150

I

implicit, 85-86
import alias, 33
infix notation, 15-16, 37
immutability, 11, 16, 40, 202

L

lambda (closure), 35, 85-86, 154

M

method, default, 34, 78-84
methods on traits, 78
match expression, 157
monad, 177, 182-186, 195
method reference, 17, 108
mixin, 34, 74, 90, 91

O

overloading, 15, 115

P

pattern match, 157
purity of function, 3
polymorphism, 90, 115

R

REPL, 7-8
recursion, 36, 172
reference type, 22

S

stack, example of, 117-120
scalac, 7, 9

T

type parameterisation, 115
type erasure, 121
type alias, 34
traits, 34, 74, 78, 86, 88, 91
try-with-resources, 112-113

U

Unit, 23-24

V

variance, 34, 133-136

W

wildcard, 129-130, 136, 158-159, 161, 165

Y

yield, 109, 191-192