Language

Question 1

Everything is an ___ (can call member functions and properties on any variable)

Answer 1

object

Question 2

___, ___, and ___ are represented as primitives at runtime

Answer 2

numbers; characters; booleans

Question 3

What are the 4 types of integers

Answer 3

Byte, Short, Int, Long

Question 4

___ or ___ is chosen based on the initial value given to an integer literal

Answer 4

Int, Long

Question 5

You can specify Long by adding the ___ suffix

Answer 5

L

Question 6

How do floating-point types differ from one another?

Answer 6

By how many decimals they can store

Question 7

Variables initialized with fractional numbers are inferred to be of type ___

Answer 7

Double

Question 8

You can specify Float with the ___ suffix

Answer 8

F or f

Question 9

What happens if the initial value of a Float contains more than 6-7 decimal digits?

Answer 9

It will be rounded

Question 10

Does Kotlin support implicit widening conversions for numbers?

Answer 10

No

Question 11

How do you convert numeric values to different types?

Answer 11

By using Explicit Conversion functions

Question 12

What are the 4 types of literal constants?

Answer 12

Decimals, Longs, Hexadecimals, and Binaries

Question 13

You can use ___ in numeric literals.

Answer 13

Underscores

Question 14

Numbers are stored as ___ unless ___ or ___ are involved.

Answer 14

JVM primitives; nullable; generics

Question 15

Boxing of numbers doesn’t always preserve ___.

Answer 15

identity

Question 16

Smaller numeric types are not ___ of bigger types, and therefore aren’t ___ ___ to bigger types.

Answer 16

sub-types; implicitly; converted

Question 17

What are the 7 explicit conversion functions?

Answer 17

toByte(); toShort(); toInt(); toLong(); toFloat(); toDouble(); toChar()

Question 18

Bitwise functions are ___ functions that can be called in ___ form.

Answer 18

named; infix

Question 19

What are the 7 infix bitwise functions?

Answer 19

signed shift left (shl); signed shift right (shr); unsigned shift right (ushr); bitwise and (and); bitwise or (or); bitwise xor (xor); bitwise inversion (inv)

Question 20

When operands are ___ ___ as floating-point numbers they follow the ___ for ___-___ arithmetic.

Answer 20

statically typed; standard; floating-point

Question 21

When operands aren’t statically typed as floating-point numbers, operations use ___ and ___.

Answer 21

equals(); compareTo()

Question 22

Characters can’t be directly treated as ___.

Answer 22

numbers

Question 23

Characters have 10 types of ___ ___.

Answer 23

escape sequences

Question 24

Booleans and Characters are ___ if a nullable reference is needed.

Answer 24

boxed

Question 25

Arrays have ___ and ___ functions that turn into [] by operator overloading.

Answer 25

get; set

Question 26

What are the 3 ways to create an Array?

Answer 26

arrayOf(); arrayOfNulls(); Array constructor

Question 27

Arrays are ___.

Answer 27

invariant

Question 28

Primitive type arrays provide arrays of primitive types without ___ ___.

Answer 28

boxing overhead

Question 29

Primitive type arrays have no ___ relationship to Array class.

Answer 29

inheritance

Question 30

Primitive type arrays have the same set of ___ and ___ as the Array class.

Answer 30

methods; properties

Question 31

Each primitive type array has it’s own corresponding ___ ___.

Answer 31

factory function

Question 32

What are the 4 types of unsigned integers?

Answer 32

UByte; UShort; UInt; ULong

Question 33

Unsigned integers support most ___ of signed integers.

Answer 33

operations

Question 34

Unsigned integers are implemented using ___ ___.

Answer 34

inline classes

Question 35

Unsigned integers have their own corresponding ___ types.

Answer 35

Array

Question 36

Unsigned integers have ___ and ___ suffixes.

Answer 36

u; U

Question 37

Unsigned long has ___ and ___ suffixes.

Answer 37

uL; UL

Question 38

___ or ___ is chosen based on the size of unsigned literal.

Answer 38

UInt; ULong

Question 39

Strings are ___.

Answer 39

immutable

Question 40

You can concatenate strings using the ___ operator.

Answer 40

plus (+)

Question 41

String ___ are preferable over concatenation.

Answer 41

templates

Question 42

You can access characters of a String by using ___ operations.

Answer 42

indexing

Question 43

String can be iterated over with a ___-___.

Answer 43

for-loop

Question 44

What are the 2 types of Strings?

Answer 44

escaped; raw

Question 45

Template expressions start with a ___.

Answer 45

dollar sign ($)

Question 46

Templates can contain a ___ ___ or ___.

Answer 46

simple name; expression

Question 47

Templates are supported in both types of ___.

Answer 47

strings

Question 48

‘if’ can be used as an ___, i.e. it returns a value.

Answer 48

expression

Question 49

‘if’ expressions are required to have an ___ branch.

Answer 49

else

Question 50

The last expression of an ‘if’ block is the ___ of the block.

Answer 50

value

Question 51

‘when’ is analogous to the ___ statement in C-like languages.

Answer 51

switch

Question 52

Each ‘when’ branch can be a ___.

Answer 52

block

Question 53

‘when’, like ‘if’ can be used as a ___, or ___.

Answer 53

expression; statement

Question 54

Like ‘if’, if ‘when’ is used as an expression an ___ branch is required.

Answer 54

else

Question 55

‘when’ branch conditions may be combined with a ___.

Answer 55

comma (,)

Question 56

‘when’ branches may have ___ ___ as conditions.

Answer 56

arbitrary expressions

Question 57

‘when’ branches may check a value for being ___ or ___ a ___ or ___.

Answer 57

in; !in; range; collection

Question 58

‘when’ branches can check that a value ___ or ___ of a type.

Answer 58

is; !is

Question 59

If no argument is given to ‘when’ then branch conditions are ___ expressions.

Answer 59

boolean

Question 60

It is possible to ___ a ‘when’ ___ in a variable.

Answer 60

capture; subject

Question 61

for-loops iterate through anything providing an ___.

Answer 61

iterator

Question 62

You can iterate over a range of numbers using the ___ ___.

Answer 62

range expression

Question 63

A for-loop over a range or array is compiled to an ___-___ loop.

Answer 63

index-based

Question 64

You can iterate with an index using the ___ property or ___ function.

Answer 64

indices; withIndex()

Question 65

A number of packages are imported by ___ in ___ kotlin file.

Answer 65

default; every

Question 66

Additional packages are imported depending on ___.

Answer 66

platform

Question 67

When importing you can disambiguate name clashes by using the ___ keyword.

Answer 67

as

Question 68

What other declarations can you use ‘import’ on?

Answer 68

top-level functions and properties; functions and properties in object declarations; enum constants

Question 69

Top-level declarations marked ___ are private to the ___ it’s declared in.

Answer 69

private; file

Question 70

What are the 3 jump expressions? What is their type?

Answer 70

return; break; continue; Nothing

Question 71

Any ___ can be marked with a label.

Answer 71

expression

Question 72

What are the 2 types of ‘return’ labels?

Answer 72

qualified; implicit

Question 73

Qualified ‘return’ allows returning from ___ ___.

Answer 73

outer function

Question 74

___ labels have same name as function to which lambda is passed.

Answer 74

implicit

Question 75

A ___ statement from an ___ function returns from the anonymous function.

Answer 75

return; anonymous