From 871b028e3401f77e0f0aa868ce3e8fd9396370a9 Mon Sep 17 00:00:00 2001
From: tx7do <yanglinbo@gmail.com>
Date: Sun, 7 Apr 2024 13:19:53 +0800
Subject: [PATCH] feat: returns a pointer to the provided value use template
 function.

---
 trans/to.go      | 18 ++++++++++++++++++
 trans/to_test.go | 30 ++++++++++++++++++++++++++++++
 2 files changed, 48 insertions(+)
 create mode 100644 trans/to.go
 create mode 100644 trans/to_test.go

diff --git a/trans/to.go b/trans/to.go
new file mode 100644
index 0000000..ef383f6
--- /dev/null
+++ b/trans/to.go
@@ -0,0 +1,18 @@
+//go:build go1.18
+// +build go1.18
+
+package trans
+
+// Ptr returns a pointer to the provided value.
+func Ptr[T any](v T) *T {
+	return &v
+}
+
+// SliceOfPtrs returns a slice of *T from the specified values.
+func SliceOfPtrs[T any](vv ...T) []*T {
+	slc := make([]*T, len(vv))
+	for i := range vv {
+		slc[i] = Ptr(vv[i])
+	}
+	return slc
+}
diff --git a/trans/to_test.go b/trans/to_test.go
new file mode 100644
index 0000000..928921b
--- /dev/null
+++ b/trans/to_test.go
@@ -0,0 +1,30 @@
+//go:build go1.18
+// +build go1.18
+
+package trans
+
+import "testing"
+
+func TestPtr(t *testing.T) {
+	b := true
+	pb := Ptr(b)
+	if pb == nil {
+		t.Fatal("unexpected nil conversion")
+	}
+	if *pb != b {
+		t.Fatalf("got %v, want %v", *pb, b)
+	}
+}
+
+func TestSliceOfPtrs(t *testing.T) {
+	arr := SliceOfPtrs[int]()
+	if len(arr) != 0 {
+		t.Fatal("expected zero length")
+	}
+	arr = SliceOfPtrs(1, 2, 3, 4, 5)
+	for i, v := range arr {
+		if *v != i+1 {
+			t.Fatal("values don't match")
+		}
+	}
+}