Guide: Fix use of sqrt() in example

cakebaker · cakebaker · commit 54babf8aa3d2 · 2014-10-28T16:09:14.000+01:00
diff --git a/src/doc/guide-lifetimes.md b/src/doc/guide-lifetimes.md
@@ -56,7 +56,7 @@ a reference.
 fn compute_distance(p1: &Point, p2: &Point) -> f64 {
     let x_d = p1.x - p2.x;
     let y_d = p1.y - p2.y;
-    sqrt(x_d * x_d + y_d * y_d)
+    (x_d * x_d + y_d * y_d).sqrt()
 }
 ~~~
 

Original file line number	Diff line number	Diff line change
`@@ -56,7 +56,7 @@ a reference.`
`56`	`56`	`fn compute_distance(p1: &Point, p2: &Point) -> f64 {`
`57`	`57`	`let x_d = p1.x - p2.x;`
`58`	`58`	`let y_d = p1.y - p2.y;`
`59`		`- sqrt(x_d * x_d + y_d * y_d)`
	`59`	`+ (x_d * x_d + y_d * y_d).sqrt()`
`60`	`60`	`}`
`61`	`61`	`~~~`
`62`	`62`