add ptr func

Author: kgrodzicki

go.mod

@@ -2,7 +2,7 @@ module github.com/flow-lab/utils
 
 go 1.20
 
-require github.com/stretchr/testify v1.8.3
+require github.com/stretchr/testify v1.8.4
 
 require (
 	github.com/davecgh/go-spew v1.1.1 // indirect

go.sum

@@ -2,8 +2,8 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/stretchr/testify v1.8.3 h1:RP3t2pwF7cMEbC1dqtB6poj3niw/9gnV4Cjg5oW5gtY=
-github.com/stretchr/testify v1.8.3/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
+github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
+github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=

utils.go

@@ -105,3 +105,9 @@ func Short(s string) string {
 	}
 	return s
 }
+
+// Ptr returns a pointer to the given value.
+// Useful for passing values to functions that expect pointers.
+func Ptr[T any](value T) *T {
+	return &value
+}

utils_test.go

@@ -79,4 +79,15 @@ func TestUtils(t *testing.T) {
 		assert.Equal(t, "1234", Short("1234"))
 		assert.Equal(t, "", Short(""))
 	})
+
+	t.Run("Test2Ptr", func(t *testing.T) {
+		var i int64 = 1234
+		assert.Equal(t, &i, Ptr(i))
+		var f float32 = 1234
+		assert.Equal(t, &f, Ptr(f))
+		var b bool = true
+		assert.Equal(t, &b, Ptr(b))
+		var s string = "1234"
+		assert.Equal(t, &s, Ptr(s))
+	})
 }