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Task/Catamorphism/Go/catamorphism.go

@@ -0,0 +1,25 @@
+package main
+
+import (
+	"fmt"
+)
+
+func main() {
+	n := []int{1, 2, 3, 4, 5}
+
+	fmt.Println(reduce(add, n))
+	fmt.Println(reduce(sub, n))
+	fmt.Println(reduce(mul, n))
+}
+
+func add(a int, b int) int { return a + b }
+func sub(a int, b int) int { return a - b }
+func mul(a int, b int) int { return a * b }
+
+func reduce(rf func(int, int) int, m []int) int {
+	r := m[0]
+	for _, v := range m[1:] {
+		r = rf(r, v)
+	}
+	return r
+}