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Golang Questions Set 6:

Quiz Mode

Can a function in Go accept a function as a parameter?

Yes

Solution:

Which keyword is used to define a function in Go?

function

define

func

def

Solution:

What is the keyword used to declare a constant in Go?

constant

const

final

let

Solution:

Which of the following is NOT a way to handle errors in Go?

Ignore them

Log them and continue

Log them and exit

Wrap them and re-throw them

Solution:

What is a function signature in Go?

the name of the function

the parameters and return types of the function

the body of the function

the visibility of the function

Solution:

Which of the following is a valid way to check for an error in Go?

Check if the error is equal to nil.

Check if the error is equal to true.

Check if the error is equal to false.

Check if the error is empty.

Solution:

What is an interface in Go?

A type that defines a set of method signatures

A type that can be instantiated

A type that cannot be used in a switch statement

A type that can only be used for function arguments

Solution:

Which of the following is the correct syntax to define a function that takes a pointer as an argument in Go?

func myFunction(int x) {}

func myFunction(*int x) {}

func myFunction(x *int) {}

func myFunction(int *x) {}

Solution:

What is the output of the following Go program?
package main
import "fmt"

func main() {
  x := map[string]int{"one": 1, "two": 2, "three": 3}
  for key, value := range x {
    if value == 2 {
      delete(x, key)
    }
  }
  fmt.Println(len(x))
}

Solution:

Which of the following is true about passing a pointer to a function in Go?

It is always slower than passing by value

It can be faster or slower depending on the size of the data being passed

It has no effect on performance

It is always faster than passing by value

Solution:

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Golang Questions Set 6:

Can a function in Go accept a function as a parameter?

Solution:

Which keyword is used to define a function in Go?

Solution:

What is the keyword used to declare a constant in Go?

Solution:

Which of the following is NOT a way to handle errors in Go?

Solution:

What is a function signature in Go?

Solution:

Which of the following is a valid way to check for an error in Go?

Solution:

What is an interface in Go?

Solution:

Which of the following is the correct syntax to define a function that takes a pointer as an argument in Go?

Solution:

What is the output of the following Go program?package mainimport "fmt"func main() { x := map[string]int{"one": 1, "two": 2, "three": 3} for key, value := range x { if value == 2 { delete(x, key) } } fmt.Println(len(x))}

Solution:

Which of the following is true about passing a pointer to a function in Go?

Solution:

Related Question Sets:

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What is the output of the following Go program?
package main
import "fmt"

func main() {
x := map[string]int{"one": 1, "two": 2, "three": 3}
for key, value := range x {
if value == 2 {
delete(x, key)
}
}
fmt.Println(len(x))
}