/
generics.go
58 lines (48 loc) · 878 Bytes
/
generics.go
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package main
import (
"fmt"
)
type Number interface {
int64 | float64
}
func SumInts(m ...int64) int64 {
var s int64
for _, v := range m {
s += v
}
return s
}
func SumFloats(m ...float64) float64 {
var s float64
for _, v := range m {
s += v
}
return s
}
func SumIntsOrFloats[V int64 | float64](m ...V) V {
var s V
for _, v := range m {
s += v
}
return s
}
func SumNumbers[V Number](m ...V) V {
var s V
for _, v := range m {
s += v
}
return s
}
func main() {
ints := []int64{31, 37, 41, 43, 47, 53, 59}
floats := []float64{31.17, 37.2, 41.9, 43.002, 47, 53, 59}
fmt.Printf("Non-Generic Sums: %v and %v\n",
SumInts(ints...),
SumFloats(floats...))
fmt.Printf("Generic Sums: %v and %v\n",
SumIntsOrFloats(ints...),
SumIntsOrFloats(floats...))
fmt.Printf("Generic Sums: %v and %v\n",
SumNumbers(ints...),
SumNumbers(floats...))
}