Fix warning: Result of call to 'addNode' is unused

jawwad · jawwad · commit 885d9d3d6502 · 2017-11-26T12:48:57.000+05:00
diff --git a/Depth-First Search/DepthFirstSearch.playground/Sources/Graph.swift b/Depth-First Search/DepthFirstSearch.playground/Sources/Graph.swift
@@ -5,6 +5,7 @@ public class Graph: CustomStringConvertible, Equatable {
     self.nodes = []
   }
   
+  @discardableResult
   public func addNode(_ label: String) -> Node {
     let node = Node(label)
     nodes.append(node)

Original file line number	Diff line number	Diff line change
`@@ -5,6 +5,7 @@ public class Graph: CustomStringConvertible, Equatable {`
`5`	`5`	`self.nodes = []`
`6`	`6`	`}`
`7`	`7`
	`8`	`+ @discardableResult`
`8`	`9`	`public func addNode(_ label: String) -> Node {`
`9`	`10`	`let node = Node(label)`
`10`	`11`	`nodes.append(node)`