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

Constants

Constants are similar to variables, but once declared and initialized, their value cannot be altered, which is why they are called "constants."

The syntax for declaring a constant is similar to that of a variable. However, in this case, we use the keyword const instead of var.

Note
The := operator cannot be used for declaring constants as it is reserved solely for variable declarations.

If we attempt to modify the value of constants, the compiler may produce an error, as illustrated in the following code:

index.go

Constants are employed for storing values that are frequently utilized throughout the program and are intended to remain unaltered. These may include mathematical constants, configuration values, or system limits.

Effectively utilizing constants can reduce the likelihood of errors, such as modifying values that should remain constant. Additionally, it enhances code readability and comprehensibility for readers by clearly indicating which values remain constant throughout the program.