Learn Data Structures and Algorithms with Golang

The SortByAge type

The SortByAge method sorts the elements concerned by Age. The SortByAge interface operates on the Employee array. This is shown in the following code snippet:

// SortByAge typetype SortByAge []Employee// SortByAge interface methodsfunc (sortIntf SortByAge) Len() int { return len(sortIntf) }func (sortIntf SortByAge) Swap(i int, j int) { sortIntf[i], sortIntf[j] = sortIntf[j], sortIntf[i] }func (sortIntf SortByAge) Less(i int, j int) bool { return sortIntf[i].Age < sortIntf[j].Age }

The main method initializes the employees array and sorts the array by age:

func main() {    var employees = []Employee{        {"Graham","231",235643,31},        {"John", "3434",245643,42},        {"Michael","8934",32432, 17},        {"Jenny", "24334",32444,26},    } fmt.Println(employees) ...