Advanced Techniques in Go Programming/

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Solution: Basic Go Data Types

Solution: Basic Go Data Types

Let’s solve the challenges set in the previous lesson.

We'll cover the following...

Problem 1: Solution

Here is an example of a function in Go that takes two arrays as input and concatenates them into a new slice:

Go (1.19.0)
package main
import (
    "fmt"
)
func concatenate(a1 [3]int, a2 [3]int) []int {
    var s []int
    var a3 [6]int
    for i := 0; i < len(a1); i++ {
        a3[i] = a1[i]
    }
    for i := 0; i < len(a2); i++ {
        a3[i + len(a1)] = a2[i]
    }
    s = a3[0:6] //creates a slice from a3[0] to a3[5]
    return s
}
func main() {
    arr1 := [3]int{1, 2, 3}
    arr2 := [3]int{4, 5, 6}
    newSlice := concatenate(arr1, arr2)
    fmt.Println(newSlice)
}

Code explanation

  • Lines 9–14: The concatenate() function takes in two arrays of integers, a1 and a2, and creates a new array, a3, with a length equal to the sum of the lengths of a1 and a2. The function then iterates through the elements of both a1 and a2 and assigns them to the corresponding positions in a3.

  • Line 15: The a3 i array s converted to a ...