Make sqrt function examples run

O1O1O1O · Simon Waddington · commit 720f7c8b8059 · 2018-02-01T14:23:48.000-08:00
diff --git a/src/main/scala/scalatutorial/sections/LexicalScopes.scala b/src/main/scala/scalatutorial/sections/LexicalScopes.scala
@@ -33,7 +33,7 @@ object LexicalScopes extends ScalaTutorialSection {
    *       (guess + x / guess) / 2
    *
    *     def isGoodEnough(guess: Double, x: Double) =
-   *       abs(square(guess) - x) < 0.001
+   *       math.abs(guess * guess - x) < 0.001
    *
    *     sqrtIter(1.0, x)
    *   }
@@ -96,7 +96,7 @@ object LexicalScopes extends ScalaTutorialSection {
    *       (guess + x / guess) / 2
    *
    *     def isGoodEnough(guess: Double) =
-   *       abs(square(guess) - x) < 0.001
+   *       math.abs(guess * guess - x) < 0.001
    *
    *     sqrtIter(1.0)
    *   }

Original file line number	Diff line number	Diff line change
`@@ -33,7 +33,7 @@ object LexicalScopes extends ScalaTutorialSection {`
`33`	`33`	`* (guess + x / guess) / 2`
`34`	`34`	`*`
`35`	`35`	`* def isGoodEnough(guess: Double, x: Double) =`
`36`		`- * abs(square(guess) - x) < 0.001`
	`36`	`+ * math.abs(guess * guess - x) < 0.001`
`37`	`37`	`*`
`38`	`38`	`* sqrtIter(1.0, x)`
`39`	`39`	`* }`
`@@ -96,7 +96,7 @@ object LexicalScopes extends ScalaTutorialSection {`
`96`	`96`	`* (guess + x / guess) / 2`
`97`	`97`	`*`
`98`	`98`	`* def isGoodEnough(guess: Double) =`
`99`		`- * abs(square(guess) - x) < 0.001`
	`99`	`+ * math.abs(guess * guess - x) < 0.001`
`100`	`100`	`*`
`101`	`101`	`* sqrtIter(1.0)`
`102`	`102`	`* }`