Kursusindhold

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

Modifying Variable Values

We've learned how to declare a variable. Now, let's understand how to modify the value of a variable.

Take a look at the following program, which prints the value of myVariable using the Println function:

index.go


              1234567
            
package main
import "fmt"

func main() {
    var myVariable = 7
    fmt.Println(myVariable) // Using the name of the variable ('myVariable') we can access and show it's value
}

We can use the following syntax for assigning a different value to the variable:

index.go


              1
            
myVariable = 9

Notice that this time, we omit the var keyword because we are not declaring a new variable. Now, let's add this line to the program:

index.go


              123456789
            
package main
import "fmt"

func main() {
    var myVariable = 7
    fmt.Println(myVariable) // Outputs 7
    myVariable = 9
    fmt.Println(myVariable) // Outputs 9
}

In the code above, we employed the var keyword to declare a variable. Alternatively, we can use the := operator for variable declaration. In such a case, the code will appear as follows:

index.go


              123456789
            
package main
import "fmt"

func main() {
    myVariable := 7
    fmt.Println(myVariable) // Outputs 7
    myVariable = 9
    fmt.Println(myVariable) // Outputs 9
}

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Sektion 1. Kapitel 5

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Kursusindhold

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

Modifying Variable Values

We've learned how to declare a variable. Now, let's understand how to modify the value of a variable.

Take a look at the following program, which prints the value of myVariable using the Println function:

index.go


              1234567
            
package main
import "fmt"

func main() {
    var myVariable = 7
    fmt.Println(myVariable) // Using the name of the variable ('myVariable') we can access and show it's value
}

We can use the following syntax for assigning a different value to the variable:

index.go


              1
            
myVariable = 9

Notice that this time, we omit the var keyword because we are not declaring a new variable. Now, let's add this line to the program:

index.go


              123456789
            
package main
import "fmt"

func main() {
    var myVariable = 7
    fmt.Println(myVariable) // Outputs 7
    myVariable = 9
    fmt.Println(myVariable) // Outputs 9
}

In the code above, we employed the var keyword to declare a variable. Alternatively, we can use the := operator for variable declaration. In such a case, the code will appear as follows:

index.go


              123456789
            
package main
import "fmt"

func main() {
    myVariable := 7
    fmt.Println(myVariable) // Outputs 7
    myVariable = 9
    fmt.Println(myVariable) // Outputs 9
}

Var alt klart?

Tak for dine kommentarer!

Sektion 1. Kapitel 5