2024, day 6

lucianoq · lucianoq · commit 6961dff8051f · 2024-12-06T06:08:26.000Z
diff --git a/2024/6/common.go b/2024/6/common.go
@@ -16,10 +16,10 @@ const (
 
 type P struct{ x, y int }
 
-func parseMap() (map[P]any, P, uint8) {
+func parseMap() (map[P]struct{}, P, uint8) {
 	var pos P
 	scanner := bufio.NewScanner(os.Stdin)
-	m := map[P]any{}
+	m := map[P]struct{}{}
 	for i := 0; scanner.Scan(); i++ {
 		line := scanner.Text()
 		for j, c := range line {
diff --git a/2024/6/main2.go b/2024/6/main2.go
@@ -26,7 +26,7 @@ type State struct {
 	Dir uint8
 }
 
-func testObstacle(m map[P]any, obstacle, pos P, dir uint8) bool {
+func testObstacle(m map[P]struct{}, obstacle, pos P, dir uint8) bool {
 
 	// impossible if the guard is there
 	if obstacle == pos {

Original file line number	Diff line number	Diff line change
`@@ -26,7 +26,7 @@ type State struct {`
`26`	`26`	`Dir uint8`
`27`	`27`	`}`
`28`	`28`
`29`		`-func testObstacle(m map[P]any, obstacle, pos P, dir uint8) bool {`
	`29`	`+func testObstacle(m map[P]struct{}, obstacle, pos P, dir uint8) bool {`
`30`	`30`
`31`	`31`	`// impossible if the guard is there`
`32`	`32`	`if obstacle == pos {`