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Introduction to GoLang
course content

Course Content

Introduction to GoLang

Introduction to GoLang

1. Getting Started
What is Go Programming Language?Hello WorldComments in GoBasics of VariablesModifying Variable ValuesConstantsBasics of Operators & ExpressionsChallenge: Hello WorldChallenge: Comments in GoChallenge: Basics of VariablesChallenge: Constants
2. Data Types
IntegersFloating-Point NumbersBooleansRunesStringsBasic Type CastingString FormattingChallenge: String Formatting Practice
3. Control Structures
Comparison OperatorsConditional StatementsConditional ChainingLogical OperatorsSwitch StatementFor LoopBreak StatementChallenge: Practicing For Loop
4. Functions
Declaring and Defining FunctionsLocal and Global ScopesPassing Data into the FunctionsReturn Values from FunctionsMultiple Return ValuesPassing Functions as ArgumentsChallenge: Reviewing Concepts of Functions
5. Arrays and Slices
Declaring ArraysAccessing and Modifying Array ElementsSlicesLength vs CapacityMulti-Dimensional ArraysIterating Over ArraysPassing Variable Number of Arguments into FunctionsPassing Arrays into FunctionsChallenge: Finding the Largest Element in a Grid
6. Intro to Structs & Maps
Creating StructsCreating Instances of StructsData in StructsWhat are Maps?Map Declaration and InitializationAccessing Map ValuesDeleting Keys From MapsChallenge: Creating a Structure

book
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.

go

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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:

go

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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:

go

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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.

question mark

Which of the following is the correct way to declare a string variable in Go?

Select the correct answer

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Thanks for your feedback!

Section 2. Chapter 5
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