update day18 solution

LD250 · LD250 · commit d81a210dcc58 · 2016-03-26T00:31:12.000+02:00
diff --git a/day18/src/main.rs b/day18/src/main.rs
@@ -52,7 +52,7 @@ fn main() {
     }
 
     fn count_on(scheme: Scheme) -> usize {
-        scheme.iter().map(|l| l.iter().filter(|x| **x==true).count()).fold(0, |sum, x| sum + x)
+        scheme.iter().map(|l| l.iter().filter(|&x| *x==true).count()).fold(0, |sum, x| sum + x)
     }
 
     fn light_on_after_steps(scheme: &Scheme, steps_count: usize, stucked_corners: bool) -> usize {

Original file line number	Diff line number	Diff line change
`@@ -52,7 +52,7 @@ fn main() {`
`52`	`52`	`}`
`53`	`53`
`54`	`54`	`fn count_on(scheme: Scheme) -> usize {`
`55`		`- scheme.iter().map(\|l\| l.iter().filter(\|x\| **x==true).count()).fold(0, \|sum, x\| sum + x)`
	`55`	`+ scheme.iter().map(\|l\| l.iter().filter(\|&x\| *x==true).count()).fold(0, \|sum, x\| sum + x)`
`56`	`56`	`}`
`57`	`57`
`58`	`58`	`fn light_on_after_steps(scheme: &Scheme, steps_count: usize, stucked_corners: bool) -> usize {`