Introduction to GoLang

1. Getting Started

In this section, you will be introduced to the Go programming language and learn how to create variables and constants. You will also learn how to do operations with values and manipulate variable values.

What is Go Programming Language?

Hello World

Comments in Go

Basics of Variables

Modifying Variable Values

Constants

Basics of Operators & Expressions

Challenge: Hello World

Challenge: Comments in Go

Challenge: Basics of Variables

Challenge: Constants

2. Data Types

In this section, we will learn about the different types of data in Go. We will learn how to deal with different Data Types and some basic operations that can be performed on that data.

Integers

Floating-Point Numbers

Challenge: String Formatting Practice

3. Control Structures

In this section, we will learn about some important concepts which allow us to control the flow of the program. These concepts or features of a programming language are collectively known as Control Structures. In order to learn about these concepts, we need some knowledge of some additional operators, which we will explore at the beginning of this section.

Comparison Operators

Conditional Statements

Challenge: Practicing For Loop

4. Functions

In this section, we will learn about functions which are the building blocks of any programming language. We will learn how to create different kinds of functions and how to use them. We will also learn about scopes of variables which will help us in working with functions.

Declaring and Defining Functions

Local and Global Scopes

Passing Data into the Functions

Return Values from Functions

Multiple Return Values

Passing Functions as Arguments

Challenge: Reviewing Concepts of Functions

5. Arrays and Slices

In this section, we will learn about a very useful data type called Array that can be used for tasks where we need to store a bigger quantity of similar data and some other cases as well. Will will learn how to create, use and manipulate arrays. Additionally, we will also learn how to use arrays to pass a variable number of arguments into a function. In this section, we will also learn about slices which are similar to arrays however differ in fundamental quality.

Declaring Arrays

Accessing and Modifying Array Elements

Slices

Length vs Capacity

Multi-Dimensional Arrays

Iterating Over Arrays

Passing Variable Number of Arguments into Functions

Passing Arrays into Functions

Challenge: Finding the Largest Element in a Grid

6. Intro to Structs & Maps

In this section, we will learn about two very useful data types, namely Structs (Structures) and Maps.

Creating Structs

Creating Instances of Structs

Data in Structs

What are Maps?

Map Declaration and Initialization

Accessing Map Values

Deleting Keys From Maps

Challenge: Creating a Structure

Floating-Point Numbers

If we try to store a decimal number in an integer variable, it will give us an error:

index.go

To store decimal values, a different data type is needed. In programming languages, including Go, we use floating-point numbers, often referred to as floats, to represent decimal numbers.

In Go, floating-point numbers come in two types: float32 and float64. float32 is a 32-bit type with limited precision, suitable for a broad range of decimal values when memory efficiency is crucial. Conversely, float64 is a 64-bit type referred to as "double precision" and provides greater accuracy, making it the default choice for most calculations requiring precision.

index.go

In the output of the program above, you can observe that the myFloatValue1 variable, which is of type float32, retains up to 7 decimal points. It's worth noting that the last digit is rounded to 7, resulting in an output of 3.1415927 instead of the original 3.1415926535.

Conversely, myFloatValue2 outputs the complete high-precision value 3.1415926535.

Все було зрозуміло?

Секція 2. Розділ 2

Зміст курсу

Introduction to GoLang

1. Getting Started

What is Go Programming Language?Hello World Comments in Go Basics of Variables Modifying Variable Values Constants Basics of Operators & Expressions Challenge: Hello World Challenge: Comments in Go Challenge: Basics of Variables Challenge: Constants

2. Data Types

Integers Floating-Point Numbers Booleans Runes Strings Basic Type Casting String Formatting Challenge: String Formatting Practice

3. Control Structures

Comparison Operators Conditional Statements Conditional Chaining Logical Operators Switch Statement For Loop Break Statement Challenge: Practicing For Loop

4. Functions

Declaring and Defining Functions Local and Global Scopes Passing Data into the Functions Return Values from Functions Multiple Return Values Passing Functions as Arguments Challenge: Reviewing Concepts of Functions

5. Arrays and Slices

Declaring Arrays Accessing and Modifying Array Elements Slices Length vs Capacity Multi-Dimensional Arrays Iterating Over Arrays Passing Variable Number of Arguments into Functions Passing Arrays into Functions Challenge: Finding the Largest Element in a Grid

6. Intro to Structs & Maps

Creating Structs Creating Instances of Structs Data in Structs What are Maps?Map Declaration and Initialization Accessing Map Values Deleting Keys From Maps Challenge: Creating a Structure

Introduction to GoLang

Floating-Point Numbers

If we try to store a decimal number in an integer variable, it will give us an error:

index.go

To store decimal values, a different data type is needed. In programming languages, including Go, we use floating-point numbers, often referred to as floats, to represent decimal numbers.

index.go

Conversely, myFloatValue2 outputs the complete high-precision value 3.1415926535.

Все було зрозуміло?

Секція 2. Розділ 2