Updated playground content

Yurii Samsoniuk · web-flow · commit b68b3b9309ec · 2017-02-13T09:50:24.000+01:00
diff --git a/Binary Tree/BinaryTree.playground/Contents.swift b/Binary Tree/BinaryTree.playground/Contents.swift
@@ -18,7 +18,7 @@ extension BinaryTree: CustomStringConvertible {
   public var description: String {
     switch self {
     case let .node(left, value, right):
-      return "value: \(value), left = [" + left.description + "], right = [" + right.description + "]"
+      return "value: \(value), left = [\(left.description)], right = [\(right.description)]"
     case .empty:
       return ""
     }

Original file line number	Diff line number	Diff line change
`@@ -18,7 +18,7 @@ extension BinaryTree: CustomStringConvertible {`
`18`	`18`	`public var description: String {`
`19`	`19`	`switch self {`
`20`	`20`	`case let .node(left, value, right):`
`21`		`- return "value: \(value), left = [" + left.description + "], right = [" + right.description + "]"`
	`21`	`+ return "value: \(value), left = [\(left.description)], right = [\(right.description)]"`
`22`	`22`	`case .empty:`
`23`	`23`	`return ""`
`24`	`24`	`}`