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Introduction to GoLang

Challenge: Reviewing Concepts of FunctionsChallenge: Reviewing Concepts of Functions

Task

  1. Finish the code for the second parameter of the operate function, which is expected to accept the capitalize function;
  2. Review the code and provide suitable arguments in the operate function call within the main() function;
  3. Save the returned values from the operate function call into the variables original and updated.
go

index.go

Pass inputString and capitalize in the operate function call. 

package main
import "fmt"

// ToLower() and ToUpper() functions are imported from the `strings` module
import "strings"

func capitalize(str string) string {
    return strings.ToUpper(str)
}

func operate(str string, operation func(string) string) (string, string) {
    return str, operation(str)
}

func main() {
    inputString := "Hello World"
   
    var original string
    var updated string

    original, updated = operate(inputString, capitalize)
    fmt.Println(original, updated)
}

Everything was clear?

Section 4. Chapter 7
course content

Course Content

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

Introduction to GoLang

Challenge: Reviewing Concepts of FunctionsChallenge: Reviewing Concepts of Functions

Task

  1. Finish the code for the second parameter of the operate function, which is expected to accept the capitalize function;
  2. Review the code and provide suitable arguments in the operate function call within the main() function;
  3. Save the returned values from the operate function call into the variables original and updated.
go

index.go

Pass inputString and capitalize in the operate function call. 

package main
import "fmt"

// ToLower() and ToUpper() functions are imported from the `strings` module
import "strings"

func capitalize(str string) string {
    return strings.ToUpper(str)
}

func operate(str string, operation func(string) string) (string, string) {
    return str, operation(str)
}

func main() {
    inputString := "Hello World"
   
    var original string
    var updated string

    original, updated = operate(inputString, capitalize)
    fmt.Println(original, updated)
}

Everything was clear?

Section 4. Chapter 7
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