[Swift 4] Update Topological Sort

kodecocodes · Jul 30, 2017 · 71a7827 · 71a7827
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diff --git a/Topological Sort/Topological Sort.playground/Contents.swift b/Topological Sort/Topological Sort.playground/Contents.swift
@@ -1,5 +1,10 @@
 //: Playground - noun: a place where people can play
 
+// last checked with Xcode 9.0b4
+#if swift(>=4.0)
+print("Hello, Swift 4!")
+#endif
+
 import UIKit
 
 let graph = Graph()

diff --git a/Topological Sort/Topological Sort.playground/timeline.xctimeline b/Topological Sort/Topological Sort.playground/timeline.xctimeline