Use built-in rand v2

ml/model_selection/model_selection.go

@@ -1,7 +1,7 @@
 package modelselection
 
 import (
-	"math/rand"
+	"math/rand/v2"
 )
 
 func TrainTestSplit(dataset []interface{}, testSize float64) (train, test []interface{}) {

rand/number.go

@@ -4,7 +4,7 @@ import (
 	"crypto/rand"
 	"errors"
 	"math/big"
-	crand "math/rand"
+	crand "math/rand/v2"
 )
 
 // IntN returns a uniform random value in [0, max). It errors if max <= 0.
@@ -14,7 +14,7 @@ func IntN(max int) (int, error) {
 	}
 	nBig, err := rand.Int(rand.Reader, big.NewInt(int64(max)))
 	if err != nil {
-		return crand.Intn(max), nil
+		return crand.IntN(max), nil
 	}
 	return int(nBig.Int64()), nil
 }

slice/sliceutil.go

@@ -1,7 +1,7 @@
 package sliceutil
 
 import (
-	"math/rand"
+	"math/rand/v2"
 	"strconv"
 	"time"
 
@@ -61,7 +61,7 @@ func DedupeFunc[T any](inputSlice []T, keyFunc func(T) any) (result []T) {
 
 // PickRandom item from a slice of elements
 func PickRandom[T any](v []T) T {
-	return v[rand.Intn(len(v))]
+	return v[rand.IntN(len(v))]
 }
 
 // Contains if a slice contains an element