Merge pull request #54 from kumparan/feature/pointer-string

feature: add TrimSpacePointerString, ValueOfPointer

CHANGELOG.md

@@ -1,5 +1,11 @@
 # go-utils
 
+<a name="v1.33.0"></a>
+## [v1.33.0] - 2023-07-20
+### New Features
+- add TrimSpacePointerString, ValueOfPointer
+
+
 <a name="v1.32.1"></a>
 ## [v1.32.1] - 2023-07-06
 ### Other Improvements
@@ -102,9 +108,6 @@
 
 <a name="v1.20.0"></a>
 ## [v1.20.0] - 2022-03-11
-
-<a name="v.1.20.0"></a>
-## [v.1.20.0] - 2022-03-11
 ### New Features
 - add constraint size gql directive ([#30](https://github.com/kumparan/kumnats/issues/30))
 
@@ -202,11 +205,11 @@
 - add money formatter for multiple currencies ([#13](https://github.com/kumparan/kumnats/issues/13))
 
 
-<a name="v1.7.1"></a>
-## [v1.7.1] - 2020-12-10
-
 <a name="v1.8.0"></a>
 ## [v1.8.0] - 2020-12-10
+
+<a name="v1.7.1"></a>
+## [v1.7.1] - 2020-12-10
 ### New Features
 - add formatter for indonesian money and date
 
@@ -271,7 +274,8 @@
 - init go-utils
 
 
-[Unreleased]: https://github.com/kumparan/kumnats/compare/v1.32.1...HEAD
+[Unreleased]: https://github.com/kumparan/kumnats/compare/v1.33.0...HEAD
+[v1.33.0]: https://github.com/kumparan/kumnats/compare/v1.32.1...v1.33.0
 [v1.32.1]: https://github.com/kumparan/kumnats/compare/v1.32.0...v1.32.1
 [v1.32.0]: https://github.com/kumparan/kumnats/compare/v1.31.0...v1.32.0
 [v1.31.0]: https://github.com/kumparan/kumnats/compare/v1.30.0...v1.31.0
@@ -288,8 +292,7 @@
 [v1.22.0]: https://github.com/kumparan/kumnats/compare/v1.21.0...v1.22.0
 [v1.21.0]: https://github.com/kumparan/kumnats/compare/v1.20.1...v1.21.0
 [v1.20.1]: https://github.com/kumparan/kumnats/compare/v1.20.0...v1.20.1
-[v1.20.0]: https://github.com/kumparan/kumnats/compare/v.1.20.0...v1.20.0
-[v.1.20.0]: https://github.com/kumparan/kumnats/compare/v1.19.3...v.1.20.0
+[v1.20.0]: https://github.com/kumparan/kumnats/compare/v1.19.3...v1.20.0
 [v1.19.3]: https://github.com/kumparan/kumnats/compare/v1.19.2...v1.19.3
 [v1.19.2]: https://github.com/kumparan/kumnats/compare/v1.19.1...v1.19.2
 [v1.19.1]: https://github.com/kumparan/kumnats/compare/v1.19.0...v1.19.1
@@ -305,9 +308,9 @@
 [v1.12.0]: https://github.com/kumparan/kumnats/compare/v1.11.0...v1.12.0
 [v1.11.0]: https://github.com/kumparan/kumnats/compare/v1.10.0...v1.11.0
 [v1.10.0]: https://github.com/kumparan/kumnats/compare/v1.9.0...v1.10.0
-[v1.9.0]: https://github.com/kumparan/kumnats/compare/v1.7.1...v1.9.0
-[v1.7.1]: https://github.com/kumparan/kumnats/compare/v1.8.0...v1.7.1
-[v1.8.0]: https://github.com/kumparan/kumnats/compare/v1.7.0...v1.8.0
+[v1.9.0]: https://github.com/kumparan/kumnats/compare/v1.8.0...v1.9.0
+[v1.8.0]: https://github.com/kumparan/kumnats/compare/v1.7.1...v1.8.0
+[v1.7.1]: https://github.com/kumparan/kumnats/compare/v1.7.0...v1.7.1
 [v1.7.0]: https://github.com/kumparan/kumnats/compare/v1.6.0...v1.7.0
 [v1.6.0]: https://github.com/kumparan/kumnats/compare/v1.5.0...v1.6.0
 [v1.5.0]: https://github.com/kumparan/kumnats/compare/v1.4.0...v1.5.0

generic.go

@@ -88,3 +88,13 @@ func DeleteByValue[T comparable](a []T, x T) []T {
 
 	return newValue
 }
+
+// ValueOfPointer return value of pointer T
+func ValueOfPointer[T comparable](i *T) T {
+	var emptyValue T
+	if i == nil {
+		return emptyValue
+	}
+
+	return *i
+}

generic_test.go

@@ -123,3 +123,21 @@ func Test_DeleteByValue(t *testing.T) {
 	assert.EqualValues(t, float32s, DeleteByValue[float32](float32s, 5.7))
 
 }
+
+func Test_ValueOfPointer(t *testing.T) {
+	var i *int
+	assert.Equal(t, 0, ValueOfPointer(i))
+	ii := 12345678901
+	i = &ii
+	assert.Equal(t, ii, ValueOfPointer(i))
+	*i = 0
+	assert.Equal(t, 0, ValueOfPointer(i))
+
+	var j *string
+	assert.Equal(t, "", ValueOfPointer(j))
+	jj := "jjjjj"
+	j = &jj
+	assert.Equal(t, jj, ValueOfPointer(j))
+	*j = ""
+	assert.Equal(t, "", ValueOfPointer(j))
+}

string.go

@@ -117,3 +117,11 @@ func EscapeQuote(in string) string {
 	}
 	return string(res)
 }
+
+// TrimSpacePointerString  :nodoc:
+func TrimSpacePointerString(s *string) {
+	if s == nil {
+		return
+	}
+	*s = strings.TrimSpace(*s)
+}

string_test.go

@@ -107,3 +107,18 @@ func Test_EscapeQuote(t *testing.T) {
 		assert.Equal(t, out, EscapeQuote(in))
 	}
 }
+
+func Test_TrimSpacePointerString(t *testing.T) {
+	str := "this is america"
+	strWithSpace := "     this is america  "
+
+	testCases := map[*string]*string{
+		&str:          &str,
+		&strWithSpace: &str,
+	}
+
+	for in, out := range testCases {
+		TrimSpacePointerString(in)
+		assert.Equal(t, out, in)
+	}
+}