继续添加逻辑

Author: yangyile

internal/utils/zero.go

@@ -0,0 +1,5 @@
+package utils
+
+func Zero[T any]() (x T) {
+	return x
+}

internal/utils/zero_test.go

@@ -0,0 +1,15 @@
+package utils_test
+
+import (
+	"testing"
+
+	"github.com/go-zwbc/slicezh/internal/utils"
+	"github.com/stretchr/testify/require"
+)
+
+func TestZero(t *testing.T) {
+	require.Equal(t, 0, utils.Zero[int]())
+	require.Equal(t, "", utils.Zero[string]())
+	require.Equal(t, 0.0, utils.Zero[float64]())
+	require.Equal(t, rune(0), utils.Zero[rune]())
+}

slice.go

@@ -3,6 +3,8 @@ package slicezh
 import (
 	"math/rand/v2"
 	"slices"
+
+	"github.com/go-zwbc/slicezh/internal/utils"
 )
 
 func Do过滤[T any](a []T, condition func(value T) bool) []T {
@@ -15,6 +17,15 @@ func Do过滤[T any](a []T, condition func(value T) bool) []T {
 	return results
 }
 
+func Get首个满足条件的[T any](a []T, condition func(value T) bool) (T, bool) {
+	for _, one := range a {
+		if condition(one) {
+			return one, true
+		}
+	}
+	return utils.Zero[T](), false
+}
+
 func Do翻转[T any](a []T) {
 	slices.Reverse(a)
 }

slice_test.go

@@ -15,6 +15,15 @@ func TestDo过滤(t *testing.T) {
 	require.Equal(t, []int{2, 4}, results)
 }
 
+func TestGet首个满足条件的(t *testing.T) {
+	one, ok := slicezh.Get首个满足条件的([]int{1, 2, 3, 4, 5}, func(value int) bool {
+		return value%2 == 0
+	})
+	require.True(t, ok)
+	t.Log(one)
+	require.Equal(t, 2, one)
+}
+
 func TestDo翻转(t *testing.T) {
 	a := []string{"a", "b", "c"}
 	slicezh.Do翻转(a)