Format and document

Author: mafinar-cmb

lib/graph/graph.dart

@@ -2,8 +2,9 @@ import 'vertex.dart';
 
 /// A Graph Type
 class Graph<T> {
-  /// Vertices of this graph
   Set<Vertex<T>> _vertices;
+
+  /// Vertices of this graph
   List<Vertex<T>> get vertices => List<Vertex<T>>.unmodifiable(_vertices);
 
   /// Settings for this graph

lib/graph/vertex.dart

@@ -33,13 +33,17 @@ class Vertex<T> {
     this.value = value ?? key;
   }
 
+  /// Lock [this] vertex, cannot modify after it is locked
   void lock() => _isLocked = true;
+
+  /// Unlock [this] vertex, can modify after it is unlock
   void unlock() => _isLocked = false;
 
   /// Adds a connection with [Vertex] `dst` and with `weight`
   bool addConnection(Vertex dst, [num weight = 1]) {
-    if (_isLocked || dst._isLocked)
+    if (_isLocked || dst._isLocked) {
       throw UnsupportedError('Cannot add to a locked vertex');
+    }
     if (_outgoingConnections.containsKey(dst)) {
       return false;
     }
@@ -51,8 +55,9 @@ class Vertex<T> {
   /// Removes a connection with `other` with `weight`. `false` for non-existent
   /// connection.
   bool removeConnection(Vertex other, [num weight = 1]) {
-    if (_isLocked || other._isLocked)
+    if (_isLocked || other._isLocked) {
       throw UnsupportedError('Cannot remove from a locked vertex');
+    }
     var outgoingRemoved = _outgoingConnections.remove(other) != null;
     var incomingRemoved = other._incomingVertices.remove(this);
 

test/graph/vertex_test.dart

@@ -131,7 +131,7 @@ void main() {
   });
 
   test('Get out degree for vertex', () {
-    Vertex c = Vertex('c');
+    var c = Vertex('c');
     c.unlock();
     expect(root.outDegree, equals(0));
     connectedVertex.addConnection(c);