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Introduction to GoLang
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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

bookComparison Operators

We discussed three comparison operators in previous chapters. However, there are additional operators in this category that we should be familiar with. Below is a list of all the comparison operators:

OperatorLogic
==Equal to
!=Not Equal to
<Less Than
<=Less Than or Equal to
>Greater Than
>=Greater Than or Equal to

Not Equal To (!=)

This operator is used to check if two values are not equal to each other. For example:

go

index

copy

              
12

            
var a int = 1
fmt.Println(a != 2) // Outputs 'true'

Less Than or Equal To (<=)

This operator is used to check if the value on the left is less than or equal to the value on the right:

go

index

copy

              
123

            
var a int = 7
fmt.Println(a <= 7) // Outputs 'true'
fmt.Println(a <= 6) // Outputs 'false'

Greater Than or Equal To (>=)

This operator is used to check if the value on the left is greater than or equal to the value on the right:

go

index

copy

              
123

            
var a int = 7
fmt.Println(a >= 7) // Outputs 'true'
fmt.Println(a >= 6) // Outputs 'true'
Which of the following is equivalent to the expression `a <= 5` ?

Which of the following is equivalent to the expression a <= 5 ?

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