Fix error in mediator pattern.

Author: Anton Soloviev

Design-Patterns.playground.zip

@@ -318,7 +318,7 @@ class MessageMediator: Mediator {
     func send(message: String, colleague: Colleague) {
         for c in colleagues {
             if c !== colleague { //for simplicity we compare object references
-                colleague.receive(message)
+                c.receive(message)
             }
         }
     }

Design-Patterns.playground/Pages/Behavioral.xcplaygroundpage/Contents.swift

@@ -363,7 +363,7 @@ class MessageMediator: Mediator {
     func send(message: String, colleague: Colleague) {
         for c in colleagues {
             if c !== colleague { //for simplicity we compare object references
-                colleague.receive(message)
+                c.receive(message)
             }
         }
     }

README.md

@@ -39,7 +39,7 @@ class MessageMediator: Mediator {
     func send(message: String, colleague: Colleague) {
         for c in colleagues {
             if c !== colleague { //for simplicity we compare object references
-                colleague.receive(message)
+                c.receive(message)
             }
         }
     }