fix: some performance optimizations

Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com>

v2/array/monad.go

@@ -20,7 +20,20 @@ import (
 	"github.com/IBM/fp-go/v2/internal/monad"
 )
 
-// Monad returns the monadic operations for an array
+// Monad returns the monadic operations for an array.
+// This provides a structured way to access all monad operations (Map, Chain, Ap, Of)
+// for arrays in a single interface.
+//
+// The Monad interface is useful when you need to pass monadic operations as parameters
+// or when working with generic code that operates on any monad.
+//
+// Example:
+//
+//	m := array.Monad[int, string]()
+//	result := m.Chain([]int{1, 2, 3}, func(x int) []string {
+//	    return []string{fmt.Sprintf("%d", x), fmt.Sprintf("%d!", x)}
+//	})
+//	// Result: ["1", "1!", "2", "2!", "3", "3!"]
 func Monad[A, B any]() monad.Monad[A, B, []A, []B, []func(A) B] {
 	return G.Monad[A, B, []A, []B, []func(A) B]()
 }