Cursusinhoud

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

Runes

Runes, also referred to as Characters, represent a single Unicode character. They are declared using the rune keyword:

index


              1
            
var myChar rune = 'a'

It's important to note that rune values are always enclosed in single quotes ('). Therefore, we wrote 'a'.

Note

Unicode is a standard that assigns a unique numerical value to each character, allowing computers to represent and process text from various languages and scripts. While it's not necessary to have an in-depth knowledge of Unicode, you can find more information on the official website.

Now, if we attempt to print the value, we might obtain an integer as output:

index


              1234567
            
package main
import "fmt"

func main() {
    var myChar rune = 'a'
    fmt.Println(myChar) // Outputs '97'
}

This is because the corresponding decimal value for the character a in the Unicode system is 97. You can find a list of Unicode characters and their decimal values here.

Please note that a rune can represent only a single character at a time; therefore, the following is incorrect:

index


              1
            
var myChar rune = 'ab' // Error: more than one character in rune literal

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Sectie 2. Hoofdstuk 4

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Cursusinhoud

Introduction to GoLang

1. Getting Started

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

5. Arrays and Slices

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

Runes

Runes, also referred to as Characters, represent a single Unicode character. They are declared using the rune keyword:

index


              1
            
var myChar rune = 'a'

It's important to note that rune values are always enclosed in single quotes ('). Therefore, we wrote 'a'.

Note

Unicode is a standard that assigns a unique numerical value to each character, allowing computers to represent and process text from various languages and scripts. While it's not necessary to have an in-depth knowledge of Unicode, you can find more information on the official website.

Now, if we attempt to print the value, we might obtain an integer as output:

index


              1234567
            
package main
import "fmt"

func main() {
    var myChar rune = 'a'
    fmt.Println(myChar) // Outputs '97'
}

This is because the corresponding decimal value for the character a in the Unicode system is 97. You can find a list of Unicode characters and their decimal values here.

Please note that a rune can represent only a single character at a time; therefore, the following is incorrect:

index


              1
            
var myChar rune = 'ab' // Error: more than one character in rune literal

Was alles duidelijk?

Bedankt voor je feedback!

Sectie 2. Hoofdstuk 4