1.1.0

Author: 2A5F

CHANGELOG.md

@@ -1,3 +1,9 @@
+# 1.1.0
+add trySetValFn
+add test
+add index
+fix example
+
 # 1.0.1
 Fix lib/src/api.dart. (-1 points)
 

README.md

@@ -16,13 +16,13 @@ final out = Out<bool>();
 
 tryDoSome(out);
 
-out.val // true
+out.val; // true
 ```
 
 ---
 ```dart
 void addRef(Ref<int> ref) {
-  tryChangeVal(ref, (val) => val++);
+  tryChangeVal(ref, (val) => val + 1);
 }
 ```
 ```dart
@@ -31,5 +31,5 @@ final ref = Ref(1);
 addRef(ref);
 addRef(ref);
 
-ref.val // 3
+ref.val; // 3
 ```

example/example.md

@@ -9,13 +9,13 @@ final out = Out<bool>();
 
 tryDoSome(out);
 
-out.val // true
+out.val; // true
 ```
 
 ---
 ```dart
 void addRef(Ref<int> ref) {
-  tryChangeVal(ref, (val) => val++);
+  tryChangeVal(ref, (val) => val + 1);
 }
 ```
 ```dart
@@ -24,5 +24,5 @@ final ref = Ref(1);
 addRef(ref);
 addRef(ref);
 
-ref.val // 3
+ref.val; // 3
 ```

lib/index.dart

@@ -0,0 +1,2 @@
+export './ref_out_box.dart';
+export './api.dart';

lib/src/api.dart

@@ -11,6 +11,15 @@ bool trySetVal<T>(Out<T> out, T val) {
   return true;
 }
 
+/// Try setting the wrapper box value
+/// Can avoid null problems
+/// Return whether the setting is successful
+bool trySetValFn<T>(Out<T> out, T fn()) {
+  if (out == null || fn == null) return false;
+  out.val = fn();
+  return true;
+}
+
 /// Try change the wrapper box value
 /// Can avoid null problems
 /// Return whether the setting is successful
@@ -30,4 +39,4 @@ Maybe<R> tryUseVal<T, R>(Box<T> box, R fn(T val)) {
 Maybe<T> toMaybe<T>(Box<T> box) {
   if (box == null) return None<T>();
   return Some<T>(box.val);
-}
+}

pubspec.yaml

@@ -1,5 +1,5 @@
 name: ref_out_box
-version: '1.0.1'
+version: '1.1.0'
 description: "Wrapping values so that they can be passed by reference, like c#'s ref out"
 authors:
 - 'MeowType <[email protected]>'

test/base_test.dart

@@ -0,0 +1,30 @@
+import 'package:test/test.dart';
+
+import 'package:ref_out_box/index.dart';
+
+void main() {
+  test('Out', () {
+    void tryDoSome(Out<bool> out) {
+      trySetVal(out, true);
+    }
+
+    final out = Out<bool>();
+
+    tryDoSome(out);
+
+    expect(out.val, isTrue);
+  });
+
+  test('Ref', () {
+    void addRef(Ref<int> ref) {
+      tryChangeVal(ref, (val) => val + 1);
+    }
+
+    final ref = Ref(1);
+
+    addRef(ref);
+    addRef(ref);
+
+    expect(ref.val, equals(3));
+  });
+}