Rename shared packages by day instead of vaguely by purpose.

2018/day01-1.go

@@ -4,15 +4,15 @@ import (
 	"fmt"
 	"os"
 
-	"internal/calibration"
+	"internal/day01"
 )
 
 // Provide a filename as input, get the result on stdout
 func main() {
 	x := 0
-	seen := calibration.Set{} // we don't use this until day01-2, just added here for backwards compatibility
+	seen := day01.Set{} // we don't use this until day01-2, just added here for backwards compatibility
 
-	x, _ = calibration.ScanFrequencies(os.Args[1], &seen, x)
+	x, _ = day01.ScanFrequencies(os.Args[1], &seen, x)
 
 	fmt.Println("Frequency list scanned, calibration complete: ", x)
 }

2018/day01-2.go

@@ -4,17 +4,17 @@ import (
 	"fmt"
 	"os"
 
-	"internal/calibration"
+	"internal/day01"
 )
 
 // Provide a filename as input, get the result on stdout
 func main() {
 	x := 0
 	found := false
-	seen := calibration.Set{0: struct{}{}}
+	seen := day01.Set{0: struct{}{}}
 
 	for {
-		x, found = calibration.ScanFrequencies(os.Args[1], &seen, x)
+		x, found = day01.ScanFrequencies(os.Args[1], &seen, x)
 		if found {
 			break
 		}

2018/day03-1.go

@@ -3,14 +3,14 @@ package main
 import (
 	"fmt"
 
-	"internal/fabric"
+	"internal/day03"
 	"internal/util"
 )
 
 func main() {
 	data := util.ReadInput()
-	claims, maxX, maxY := fabric.ParseClaims(data)
-	grid := fabric.PopulateGrid(claims, maxX, maxY)
+	claims, maxX, maxY := day03.ParseClaims(data)
+	grid := day03.PopulateGrid(claims, maxX, maxY)
 
 	count := 0
 	for y := 0; y < len(grid); y++ {

2018/day03-2.go

@@ -3,14 +3,14 @@ package main
 import (
 	"fmt"
 
-	"internal/fabric"
+	"internal/day03"
 	"internal/util"
 )
 
 func main() {
 	data := util.ReadInput()
-	claims, maxX, maxY := fabric.ParseClaims(data)
-	fabric.PopulateGrid(claims, maxX, maxY) // ignoring return value because we only want the side effect here
+	claims, maxX, maxY := day03.ParseClaims(data)
+	day03.PopulateGrid(claims, maxX, maxY) // ignoring return value because we only want the side effect here
 
 	id := -1
 	count := 0

2018/day04-1.go

@@ -3,14 +3,14 @@ package main
 import (
 	"fmt"
 
-	"internal/guards"
+	"internal/day04"
 	"internal/util"
 )
 
 func main() {
 	data := util.ReadInput()
-	shifts := guards.ParseInput(data)
-	guards := guards.BuildGuards(shifts)
+	shifts := day04.ParseInput(data)
+	guards := day04.BuildGuards(shifts)
 
 	sleepiest, sleepiestMinute := FindSleepiestData(guards)
 
@@ -19,8 +19,8 @@ func main() {
 	fmt.Printf("Result: %d\n", sleepiest.ID*sleepiestMinute)
 }
 
-func FindSleepiestData(data map[int]*guards.Guard) (*guards.Guard, int) {
-	var sleepiest *guards.Guard
+func FindSleepiestData(data map[int]*day04.Guard) (*day04.Guard, int) {
+	var sleepiest *day04.Guard
 	for _, guard := range data {
 		if sleepiest == nil {
 			sleepiest = guard

2018/day04-2.go

@@ -3,14 +3,14 @@ package main
 import (
 	"fmt"
 
-	"internal/guards"
+	"internal/day04"
 	"internal/util"
 )
 
 func main() {
 	data := util.ReadInput()
-	shifts := guards.ParseInput(data)
-	guards := guards.BuildGuards(shifts)
+	shifts := day04.ParseInput(data)
+	guards := day04.BuildGuards(shifts)
 
 	sleepiest, sleepiestMinute := FindSleepiestData(guards)
 
@@ -19,8 +19,8 @@ func main() {
 	fmt.Printf("Result: %d\n", sleepiest.ID*sleepiestMinute)
 }
 
-func FindSleepiestData(data map[int]*guards.Guard) (*guards.Guard, int) {
-	var sleepiest *guards.Guard
+func FindSleepiestData(data map[int]*day04.Guard) (*day04.Guard, int) {
+	var sleepiest *day04.Guard
 	var minute, value int
 
 	for _, guard := range data {

2018/day05-1.go

@@ -3,12 +3,12 @@ package main
 import (
 	"fmt"
 
-	"internal/polymer"
+	"internal/day05"
 	"internal/util"
 )
 
 func main() {
 	data := util.ReadInputBytes()
-	result := polymer.ApplyReactions(data)
+	result := day05.ApplyReactions(data)
 	fmt.Println(len(result))
 }

2018/day05-2.go

@@ -3,7 +3,7 @@ package main
 import (
 	"fmt"
 
-	"internal/polymer"
+	"internal/day05"
 	"internal/util"
 )
 
@@ -12,8 +12,8 @@ func main() {
 	result := [26][]byte{}
 
 	for i := 0; i < 26; i++ {
-		result[i] = polymer.StripElement(data, rune('a'+i))
-		result[i] = polymer.ApplyReactions(result[i])
+		result[i] = day05.StripElement(data, rune('a'+i))
+		result[i] = day05.ApplyReactions(result[i])
 	}
 
 	shortest := len(result[0])

2018/day06-1.go

@@ -3,15 +3,15 @@ package main
 import (
 	"fmt"
 
-	"internal/coords"
+	"internal/day06"
 	"internal/util"
 )
 
 func main() {
 	data := util.ReadInput()
-	points := coords.ParsePoints(data)
+	points := day06.ParsePoints(data)
 
-	coords.ComputeRectilinearAreas(points)
+	day06.ComputeRectilinearAreas(points)
 
 	biggest := points[0]
 	for _, point := range points {

2018/day06-2.go

@@ -3,14 +3,14 @@ package main
 import (
 	"fmt"
 
-	"internal/coords"
+	"internal/day06"
 	"internal/util"
 )
 
 func main() {
 	data := util.ReadInput()
-	points := coords.ParsePoints(data)
+	points := day06.ParsePoints(data)
 
-	area := coords.ComputeNearnessRegion(points, 10000)
+	area := day06.ComputeNearnessRegion(points, 10000)
 	fmt.Println(area)
 }

2018/day07-1.go

@@ -4,7 +4,7 @@ import (
 	"fmt"
 	"strings"
 
-	"internal/tree"
+	"internal/day07"
 	"internal/util"
 )
 
@@ -12,10 +12,10 @@ func main() {
 	data := util.ReadInput()
 
 	// Build a tree of dependencies.
-	root := tree.BuildDependencyTree(data)
+	root := day07.BuildDependencyTree(data)
 
 	// Walk the tree and determine the correct ordering.
-	order := tree.FindOrder(root)
+	order := day07.FindOrder(root)
 
 	output := strings.Builder{}
 	for _, node := range order {

2018/day07-2.go

@@ -3,7 +3,7 @@ package main
 import (
 	"fmt"
 
-	"internal/tree"
+	"internal/day07"
 	"internal/util"
 )
 
@@ -11,9 +11,9 @@ func main() {
 	data := util.ReadInput()
 
 	// Build a tree of dependencies.
-	root := tree.BuildDependencyTree(data)
+	root := day07.BuildDependencyTree(data)
 
 	// Build
-	time := tree.SimulateConstruction(root)
+	time := day07.SimulateConstruction(root)
 	fmt.Println(time)
 }

2018/internal/day01/calibration.go

@@ -1,4 +1,4 @@
-package calibration
+package day01
 
 import (
 	"bufio"

2018/internal/day03/fabric_claims.go

@@ -1,5 +1,4 @@
-// Used by both parts of day 03
-package fabric
+package day03
 
 import (
 	"strconv"

2018/internal/day04/guards.go

@@ -1,4 +1,4 @@
-package guards
+package day04
 
 import (
 	"sort"

2018/internal/day05/polymer.go

@@ -1,5 +1,5 @@
 // Functions for operating on polymers from day 5.
-package polymer
+package day05
 
 import (
 	"bytes"

2018/internal/day06/coords.go

@@ -1,4 +1,4 @@
-package coords
+package day06
 
 import (
 	"strconv"

2018/internal/day07/breadthfirst.go

@@ -1,7 +1,7 @@
 // BreadthFirstOrder and its companion functions ended up not giving the
 // right solution, but I'm leaving them here as a useful generic tree
 // algorithm.
-package tree
+package day07
 
 func BreadthFirstOrder(root *Node) []*Node {
 	seen := make(map[rune]bool)

2018/internal/day07/construction.go

@@ -1,4 +1,4 @@
-package tree
+package day07
 
 func SimulateConstruction(root *Node) int {
 	working := make(map[rune]*Node)

2018/internal/day07/debug.go

@@ -1,4 +1,4 @@
-package tree
+package day07
 
 import (
 	"fmt"

2018/internal/day07/findorder.go

@@ -1,4 +1,4 @@
-package tree
+package day07
 
 // FindOrder determines the correct order according to these rules:
 // 1. A node cannot come before all of its parents have been included.

2018/internal/day07/tree.go

@@ -1,4 +1,4 @@
-package tree
+package day07
 
 import (
 	"regexp"