Add exp_slices.go

Author: devlights

examples/generics/examples.go

@@ -2,6 +2,7 @@ package generics
 
 import (
 	"github.com/devlights/try-golang/examples/generics/exp_constraints"
+	"github.com/devlights/try-golang/examples/generics/exp_slices"
 	"github.com/devlights/try-golang/examples/generics/typeconstraints"
 	"github.com/devlights/try-golang/examples/generics/typeparameters"
 	"github.com/devlights/try-golang/mapping"
@@ -22,4 +23,5 @@ func (r *register) Regist(m mapping.ExampleMapping) {
 	typeparameters.NewRegister().Regist(m)
 	typeconstraints.NewRegister().Regist(m)
 	exp_constraints.NewRegister().Regist(m)
+	exp_slices.NewRegister().Regist(m)
 }

examples/generics/exp_slices/examples.go

@@ -0,0 +1,20 @@
+package exp_slices
+
+import (
+	"github.com/devlights/try-golang/mapping"
+)
+
+type (
+	register struct{}
+)
+
+// NewRegister は、generics パッケージ用の lib.Register を返します.
+func NewRegister() mapping.Register {
+	r := new(register)
+	return r
+}
+
+// Regist は、generics パッケージ配下に存在するサンプルを登録します.
+func (r *register) Regist(m mapping.ExampleMapping) {
+	m["generics_exp_slices"] = ExpSlices
+}

examples/generics/exp_slices/exp_slices.go

@@ -0,0 +1,29 @@
+package exp_slices
+
+import (
+	"github.com/devlights/gomy/output"
+	"golang.org/x/exp/slices"
+)
+
+func ExpSlices() error {
+	var (
+		s1 = []string{"hello", "world"}
+		s2 = []string{"hello", "world"}
+		s3 = []string{"world", "hello"}
+		s4 = []int{100, 101}
+	)
+
+	output.Stdoutl("[Equal(s1, s2)]", slices.Equal(s1, s2))
+	output.Stdoutl("[Equal(s2, s3)]", slices.Equal(s2, s3))
+	// compile error
+	//fmt.Println(slices.Equal(s1, s4))
+
+	s5 := slices.Insert(s4, 1, 999)
+	output.Stdoutl("[Insert]", s4, s5)
+
+	idx := slices.Index(s5, 999)
+	s6 := slices.Delete(s5, idx, idx+1)
+	output.Stdoutl("[Delete]", s5, s6)
+
+	return nil
+}