Merge pull request #919 from justinpermar/patch-2

SethTisue · web-flow · commit c7eb44c2eab1 · 2017-11-18T13:36:46.000-08:00
add return type other than Unit onto the prepend() function in trait …
diff --git a/_tour/lower-type-bounds.md b/_tour/lower-type-bounds.md
@@ -42,7 +42,7 @@ To fix this, we need to flip the variance of the type of the parameter `elem` in
 
 ```tut
 trait Node[+B] {
-  def prepend[U >: B](elem: U)
+  def prepend[U >: B](elem: U): Node[U]
 }
 
 case class ListNode[+B](h: B, t: Node[B]) extends Node[B] {

Original file line number	Diff line number	Diff line change
@@ -42,7 +42,7 @@ To fix this, we need to flip the variance of the type of the parameter `elem` in
`42`	`42`
`43`	`43`	```tut
`44`	`44`	`trait Node[+B] {`
`45`		`- def prepend[U >: B](elem: U)`
	`45`	`+ def prepend[U >: B](elem: U): Node[U]`
`46`	`46`	`}`
`47`	`47`
`48`	`48`	`case class ListNode[+B](h: B, t: Node[B]) extends Node[B] {`