Update style of Graph

Author: richard-ash

Graph/Graph.playground/playground.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

Graph/Graph.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

Graph/Graph/Edge.swift

@@ -29,14 +29,13 @@ extension Edge: CustomStringConvertible {
 
 extension Edge: Hashable {
 
-    public func hash(into hasher: inout Hasher) {
-              hasher.combine(from)
-              hasher.combine(to)
-           if weight != nil {
-                hasher.combine(weight)
-             }
-            }
-    
+  public func hash(into hasher: inout Hasher) {
+    hasher.combine(from)
+    hasher.combine(to)
+    if weight != nil {
+      hasher.combine(weight)
+    }
+  }
 
 }