Introduction to Scala Programming

Question 1

(Unit 4- Operators) What are the basic data types?

Accepted Answer

All of the above

Question 2

Some more trusted software principles are:

Accepted Answer

Bound Checking, Unit testing, Variable scope and lifetime

Question 3

What is a string and how is it symbolised?

Accepted Answer

a sequence of characters with double quotation marks

Question 4

Finally, why should you exactly use Scala?

Accepted Answer

Cross-platform compatibility – runs on Java Virtual Machine (JVM), Scala is a very expressive, elegant, and powerful language., Hybrid language – both object-oriented and functional., It is also statically typed so type checking is done by the compiler

Question 5

How many bites in a Byte and Short?

Accepted Answer

Byte (1 byte) Short(2 bytes)

Question 6

Define Int and what does it stand for

Accepted Answer

Integer (4bytes)- integer type, whole numbers -21, 30

Question 7

Is Scala applicable across multiple domains?

Accepted Answer

True

Question 8

What results with poor programming style and technique?

Accepted Answer

Poor maintainability, Vulnerability to attack, Poor Security

Question 9

Trusted Software principles are:

Accepted Answer

Initialisation of structures and variables, Validation of input, Naming conventions

Question 10

Is Scala versatile (from backend systems to machine learning, +big data analytics)?

Accepted Answer

True

Question 11

How many bytes are there in a Char?

Accepted Answer

2 bytes

Question 12

Overview of Unit 4- learning outcomes:

Accepted Answer

Analyse problem and produce computer program spec (cw), Evaluate verification techniques for software testing (cw), Apply Software testing techniques to verify (cw), verify components of a computer program and ensure it is trustworthy(cw)

Question 13

Define computer programming (Multi-answer)

Accepted Answer

require their translation into a design that can be executed on a computer., Design phase require the ident+comb. of appropriate programmingabstractions, requires the production of requirements, requires the analysis ofa problem

Question 14

What does functional programming do in Scala?

Accepted Answer

creates reusable, maintainable and scalable code., benefits from familiar OOP concepts like classes, inheritance, polymorphism, constructs like immutability, higher order functions, and monads.

Question 15

Why should you utilise Scala?

Accepted Answer

Hybrid language- both object oriented and functional

Question 16

Reasons to learn Scala as a professional

Accepted Answer

You can create reusable, maintainable and scalable code due to FP, Functional and Object-Oriented Programming Hybrid

Question 17

Delivery structure of assessment at University: How will it be laid out?

Accepted Answer

All of the above

Question 18

How many bytes are there in a double?

Accepted Answer

8 bytes

Question 19

How many bytes are there in an Integer

Accepted Answer

4 bytes

Question 20

Name how many bytes does Long and Float have.

Accepted Answer

Long(8 bytes) Float(4 bytes)

Question 21

What are Scala developments?

Accepted Answer

Netflix, Twitter and LinkedIn, Airbnb and Apple Inc

Question 22

Widening conversions = possible to assign an Int to a Long, or Float to a Double but not vice versa.

Accepted Answer

True

Introduction to Scala Programming

Questions 22

Introduction to Scala Programming

Questions 22