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Copy pathmain.go
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73 lines (61 loc) · 1.43 KB
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package main
import "fmt"
type Number interface {
int64 | float64
}
func main() {
// Initialize a map for the integer values
ints := map[string]int64{
"first": 34,
"second": 12,
}
// Initialize a map for the float values
floats := map[string]float64{
"first": 35.98,
"second": 26.99,
}
fmt.Printf("Non-Generic Sums: %v and %v\n",
SumInts(ints),
SumFloats(floats))
fmt.Printf("Generic Sums: %v and %v\n",
SumIntsOrFloats[string, int64](ints),
SumIntsOrFloats[string, float64](floats))
fmt.Printf("Generic Sums, type parameters inferred: %v and %v\n",
SumIntsOrFloats(ints),
SumIntsOrFloats(floats))
fmt.Printf("Generic Sums with Constraint: %v and %v\n",
SumNumbers(ints),
SumNumbers(floats))
}
// SumInts adds together the values of m.
func SumInts(m map[string]int64) int64 {
var s int64
for _, v := range m {
s += v
}
return s
}
// SumFloat adds together the values of m
func SumFloats(m map[string]float64) float64 {
var s float64
for _, v := range m {
s += v
}
return s
}
// SumIntsOrFloats sums the value of map m. It supports both int64 and float64 as types for map values
func SumIntsOrFloats[K comparable, V int64 | float64](m map[K]V) V {
var s V
for _, v := range m {
s += v
}
return s
}
// SumNumbers sums the values for map m. It supports both integers and floats as map values
func SumNumbers[K comparable, V Number](m map[K]V) V {
var s V
for _, v := range m {
s += v
}
return s
}