Kursinnehåll

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

Strings

In Go, strings are sequences of Unicode characters, which essentially means they represent textual data. String data is always enclosed in double quotation marks (") or backticks. The string data type is represented by the string keyword.

index.go


              1
            
var myString string = "Hello World"

Note

A string is a data type in Go, while a string literal refers to the actual representation of a string value within the source code, for example, Hello World.

We can write a string literal in multiple lines by enclosing it in backticks (``). You can see the difference in the following program:

index.go


              1234567891011121314
            
package main
import "fmt"

func main() {
    var myString string
   
    // Using double quotes ("")
    myString = "Hello World"
    fmt.Println(myString)
   
    // Using backticks (``)
    myString = `Hello World`
    fmt.Println(myString)
}

Strings can be joined together using the plus (+) operator:

index.go


              1234567891011
            
package main
import "fmt"

func main() {
    var stringOne string = "Hello"
    var stringTwo string = "World"
   
    var stringThree string = stringOne + " " + stringTwo
   
    fmt.Println(stringThree)
}

The process of joining two strings using the (+) operator is called string concatenation.

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Avsnitt 2. Kapitel 5

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Kursinnehåll

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

Strings

index.go


              1
            
var myString string = "Hello World"

Note

A string is a data type in Go, while a string literal refers to the actual representation of a string value within the source code, for example, Hello World.

We can write a string literal in multiple lines by enclosing it in backticks (``). You can see the difference in the following program:

index.go


              1234567891011121314
            
package main
import "fmt"

func main() {
    var myString string
   
    // Using double quotes ("")
    myString = "Hello World"
    fmt.Println(myString)
   
    // Using backticks (``)
    myString = `Hello World`
    fmt.Println(myString)
}

Strings can be joined together using the plus (+) operator:

index.go


              1234567891011
            
package main
import "fmt"

func main() {
    var stringOne string = "Hello"
    var stringTwo string = "World"
   
    var stringThree string = stringOne + " " + stringTwo
   
    fmt.Println(stringThree)
}

The process of joining two strings using the (+) operator is called string concatenation.

Var allt tydligt?

Tack för dina kommentarer!

Avsnitt 2. Kapitel 5