clean up some warnings

AOC.Common/Extensions.cs

@@ -8,6 +8,7 @@ public static class Extensions
     public static IEnumerable<T> Repeat<T>(this IEnumerable<T> sequence, int? count = null)
     {
         while (count == null || count-- > 0)
+            // ReSharper disable once PossibleMultipleEnumeration
             foreach (var item in sequence)
                 yield return item;
     }
@@ -123,4 +124,4 @@ public static class Extensions
         if (s1.Length != other.Length) throw new("Strings must be equal length.");
         return s1.Zip(other).Count(s => s.First != s.Second);
     }
-}
+}

AOC.Common/Trees.cs

@@ -41,17 +41,24 @@ public class Tree<T>(Tree<T>.Node root)
             set
             {
                 if (value != null) value.Parent = this;
-                if (Children.Count >= 2) Children[1] = value;
+                switch (Children.Count)
-                else if (Children.Count == 0) Children.Add(null);
+                {
+                    case >= 2:
+                        Children[1] = value;
+                        break;
+                    case 0:
+                        Children.Add(null);
+                        break;
+                }
                 Children.Add(value);
             }
         }
 
-        public int DistanceToParent(Node parent)
+        public int DistanceToParent(Node nodeParent)
         {
             var current = this;
             var dist = 0;
-            while (current != parent)
+            while (current != nodeParent)
             {
                 dist++;
                 current = current?.Parent;

AOC2015/Day12.cs

@@ -35,5 +35,5 @@ public sealed partial class Day12() : Day(2015, 12, "JSAbacusFramework.io")
 
     private long GetSum(JArray arr, string avoid) => arr.Sum((dynamic a) => (long)GetSum(a, avoid));
 
-    private long GetSum(JValue val, string avoid) => val.Type == JTokenType.Integer ? (long)(val.Value ?? 0L) : 0;
+    private static long GetSum(JValue val, string avoid) => val.Type == JTokenType.Integer ? (long)(val.Value ?? 0L) : 0;
-}
+}

AOC2015/Day16.cs

@@ -3,15 +3,18 @@ namespace AOC2015;
 /// <summary>
 /// Day 16: <a href="https://adventofcode.com/2015/day/16"/>
 /// </summary>
-public sealed class Day16() : Day(2015, 16, "Aunt Sue")
+public sealed partial class Day16() : Day(2015, 16, "Aunt Sue")
 {
+    [GeneratedRegex(@": \d\d")]
+    private static partial Regex TwoDigitsRegex();
+    
     public override void ProcessInput()
     {
     }
 
     private IEnumerable<string> Common() =>
         Input
-            .Select(i => Regex.Replace(i, @": \d\d", ": 9"))
+            .Select(i => TwoDigitsRegex().Replace(i, ": 9"))
             .WhereMatch("children: 3")
             .WhereMatch("samoyeds: 2")
             .WhereMatch("akitas: 0")

AOC2015/Day22.cs

@@ -18,7 +18,8 @@ public sealed class Day22() : Day(2015, 22, "Wizard Simulator 20XX")
 
     private Dictionary<string, int> _boss;
 
-    public record Spell(
+    private record Spell(
+        // ReSharper disable once NotAccessedPositionalProperty.Local
         string Name,
         int Mana,
         int Duration = 0,
@@ -28,7 +29,7 @@ public sealed class Day22() : Day(2015, 22, "Wizard Simulator 20XX")
         int ManaCharge = 0
     );
 
-    public struct GameState(bool HardMode = false, int RoundNumber = 0, int TotalManaSpent = 0, int PlayerHealth = 50,
+    private struct GameState(bool HardMode = false, int RoundNumber = 0, int TotalManaSpent = 0, int PlayerHealth = 50,
         int PlayerMana = 500, int BossHealth = 0, int BossDamage = 0, Dictionary<Spell, int>? ActiveSpells = null)
     {
         public GameResult DoTurn(Spell spell)
@@ -77,7 +78,7 @@ public sealed class Day22() : Day(2015, 22, "Wizard Simulator 20XX")
         }
     }
 
-    public enum GameResult
+    private enum GameResult
     {
         Win,
         Loss,

AOC2016/Day07.cs

@@ -15,15 +15,9 @@ public sealed partial class Day07() : Day(2016, 7, "Internet Protocol Version 7"
     {
     }
 
-    private static bool SupportsTls(string input)
+    private static bool SupportsTls(string input) =>
-    {
+        !InsideBracketsRegex().Matches(input).Any(m => CheckAbba(m.ValueSpan)) &&
-        foreach (var m in InsideBracketsRegex().Matches(input).Cast<Match>())
+        BracketsRegex().Split(input).Any(v => CheckAbba(v));
-        {
-            if (CheckAbba(m.ValueSpan)) return false;
-        }
-
-        return BracketsRegex().Split(input).Any(v => CheckAbba(v));
-    }
 
     private static bool CheckAbba(ReadOnlySpan<char> input)
     {
@@ -41,10 +35,10 @@ public sealed partial class Day07() : Day(2016, 7, "Internet Protocol Version 7"
     private static bool SupportsSsl(string input)
     {
         foreach (var ip in BracketsRegex().Split(input))
-            foreach (var aba in CheckAba(ip))
+        foreach (var aba in CheckAba(ip))
-                foreach (var m in InsideBracketsRegex().Matches(input).Cast<Match>())
+        foreach (var m in InsideBracketsRegex().Matches(input).Cast<Match>())
-                    if (m.Value.Contains($"{aba[1]}{aba[0]}{aba[1]}"))
+            if (m.Value.Contains($"{aba[1]}{aba[0]}{aba[1]}"))
-                        return true;
+                return true;
 
         return false;
     }
@@ -58,4 +52,4 @@ public sealed partial class Day07() : Day(2016, 7, "Internet Protocol Version 7"
 
     public override object Part1() => Input.Count(SupportsTls);
     public override object Part2() => Input.Count(SupportsSsl);
-}
+}

AOC2019/Day05.cs

@@ -13,8 +13,6 @@ public sealed class Day05() : Day(2019, 5, "Sunny with a Chance of Asteroids")
         var i = 0;
         while (i < v.Count && v[i] != 99)
         {
-            int Val(int mode, int val) => mode != 0 ? val : v[val];
-
             var mode1 = v[i] / 100 % 10;
             var mode2 = v[i] / 1000;
 
@@ -51,6 +49,10 @@ public sealed class Day05() : Day(2019, 5, "Sunny with a Chance of Asteroids")
                     i += 4;
                     break;
             }
+
+            continue;
+
+            int Val(int mode, int val) => mode != 0 ? val : v[val];
         }
     }
 

AOC2019/Day10.cs

@@ -36,12 +36,6 @@ public sealed class Day10() : Day(2019, 10, "Monitoring Station")
 
     public override object Part2()
     {
-        static IEnumerable<(int x, int y, double angle, double dist)> GetValue(
-            Queue<(int x, int y, double angle, double dist)> q)
-        {
-            if (q.Count > 0) yield return q.Dequeue();
-        }
-
         return _asteroids!
             .Where(a => a != _best)
             .Select(a =>
@@ -60,5 +54,11 @@ public sealed class Day10() : Day(2019, 10, "Monitoring Station")
             .Take(1)
             .Select(a => a.x * 100 + a.y)
             .Single();
+
+        static IEnumerable<(int x, int y, double angle, double dist)> GetValue(
+            Queue<(int x, int y, double angle, double dist)> q)
+        {
+            if (q.Count > 0) yield return q.Dequeue();
+        }
     }
 }

AOC2019/Day14.cs

@@ -12,8 +12,7 @@ public sealed class Day14() : Day(2019, 14, "Space Stoichiometry")
 
     private bool Consume(string chem, long quantity)
     {
-        if (quantity <= 0)
+        ArgumentOutOfRangeException.ThrowIfNegativeOrZero(quantity);
-            throw new ArgumentOutOfRangeException(nameof(quantity));
 
         _available.TryAdd(chem, 0);
 
@@ -70,6 +69,7 @@ public sealed class Day14() : Day(2019, 14, "Space Stoichiometry")
     {
         public readonly Component Product;
         public readonly Component[] Reactants;
+        private static readonly string[] Separators = [", ", " => "];
 
         private Reaction(Component[] reactants, Component product)
         {
@@ -79,7 +79,7 @@ public sealed class Day14() : Day(2019, 14, "Space Stoichiometry")
 
         public static Reaction Parse(string s)
         {
-            var ss = s.Split(new[] { ", ", " => " }, StringSplitOptions.None);
+            var ss = s.Split(Separators, StringSplitOptions.None);
 
             return new(
                 ss.Take(ss.Length - 1).Select(ParseComponent).ToArray(),

AOC2020/Day07.cs

@@ -34,7 +34,7 @@ public sealed class Day07() : Day(2020, 7, "Handy Haversacks")
     public override object Part1()
     {
         // breadth-first search with Queue
-        var start = new Queue<string>(new[] { "shiny gold" });
+        Queue<string> start = new(["shiny gold"]);
         var p = new HashSet<string>();
         string node;
         while (true)

AOC2020/Day14.cs

@@ -9,6 +9,9 @@ public sealed class Day14() : Day(2020, 14, "Docking Data")
     {
     }
 
+    private static readonly char[] SquareBrackets = ['[', ']'];
+    private static readonly char[] BracketsAndEquals = [..SquareBrackets, '='];
+
     public override object Part1()
     {
         var writes = new Dictionary<ulong, ulong>();
@@ -32,7 +35,7 @@ public sealed class Day14() : Day(2020, 14, "Docking Data")
             }
             else
             {
-                var spl = line.Split(new[] { '[', ']', '=' },
+                var spl = line.Split(BracketsAndEquals,
                         StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries)
                     .Skip(1)
                     .Select(ulong.Parse)
@@ -60,7 +63,7 @@ public sealed class Day14() : Day(2020, 14, "Docking Data")
             else
             {
                 var value = ulong.Parse(spl[2]);
-                var addr = ulong.Parse(spl[0].Split(new[] { '[', ']' },
+                var addr = ulong.Parse(spl[0].Split(SquareBrackets,
                     StringSplitOptions.TrimEntries | StringSplitOptions.RemoveEmptyEntries)[1]);
 
                 var floats = new List<int>();

AOC2020/Day17.cs

@@ -58,7 +58,7 @@ public sealed class Day17() : Day(2020, 17, "Conway Cubes")
                 {
                     var active = Neighbors(prev, x, y, z);
                     if (prev[(x, y, z)] == '#')
-                        next[(x, y, z)] = active == 2 || active == 3 ? '#' : '.';
+                        next[(x, y, z)] = active is 2 or 3 ? '#' : '.';
                     else
                         next[(x, y, z)] = active == 3 ? '#' : '.';
                 }
@@ -95,7 +95,7 @@ public sealed class Day17() : Day(2020, 17, "Conway Cubes")
                     {
                         var active = Neighbors4(prev, x, y, z, w);
                         if (prev[(x, y, z, w)] == '#')
-                            next[(x, y, z, w)] = active == 2 || active == 3 ? '#' : '.';
+                            next[(x, y, z, w)] = active is 2 or 3 ? '#' : '.';
                         else
                             next[(x, y, z, w)] = active == 3 ? '#' : '.';
                     }

AOC2020/Day18.cs

@@ -20,23 +20,27 @@ public sealed class Day18() : Day(2020, 18, "Operation Order")
             {
                 postfixNotation.Append(c);
             }
-            else if (c == '(')
+            else switch (c)
             {
-                postfixStack.Push(c);
+                case '(':
-            }
+                    postfixStack.Push(c);
-            else if (c == ')')
+                    break;
-            {
+                case ')':
-                while (postfixStack.Count > 0 && postfixStack.Peek() != '(')
+                    {
-                    postfixNotation.Append(postfixStack.Pop());
+                        while (postfixStack.Count > 0 && postfixStack.Peek() != '(')
+                            postfixNotation.Append(postfixStack.Pop());
 
-                postfixStack.TryPop(out _);
+                        postfixStack.TryPop(out _);
-            }
+                        break;
-            else
+                    }
-            {
+                default:
-                while (postfixStack.Count > 0 && precedence(c) <= precedence(postfixStack.Peek()))
+                    {
-                    postfixNotation.Append(postfixStack.Pop());
+                        while (postfixStack.Count > 0 && precedence(c) <= precedence(postfixStack.Peek()))
+                            postfixNotation.Append(postfixStack.Pop());
 
-                postfixStack.Push(c);
+                        postfixStack.Push(c);
+                        break;
+                    }
             }
 
         while (postfixStack.Count > 0)
@@ -54,8 +58,15 @@ public sealed class Day18() : Day(2020, 18, "Operation Order")
                 var a = expressionStack.Pop();
                 var b = expressionStack.Pop();
 
-                if (c == '+') expressionStack.Push(a + b);
+                switch (c)
-                if (c == '*') expressionStack.Push(a * b);
+                {
+                    case '+':
+                        expressionStack.Push(a + b);
+                        break;
+                    case '*':
+                        expressionStack.Push(a * b);
+                        break;
+                }
             }
 
         return expressionStack.Pop();

AOC2020/Day20.cs

@@ -3,8 +3,11 @@ namespace AOC2020;
 /// <summary>
 ///     Day 20: <a href="https://adventofcode.com/2020/day/20" />
 /// </summary>
-public sealed class Day20() : Day(2020, 20, "Jurassic Jigsaw")
+public sealed partial class Day20() : Day(2020, 20, "Jurassic Jigsaw")
 {
+    [GeneratedRegex("(?<=#.{77})#.{4}#{2}.{4}#{2}.{4}#{3}(?=.{77}#.{2}#.{2}#.{2}#.{2}#.{2}#)")]
+    private static partial Regex MonsterRegex();
+    
     public override void ProcessInput()
     {
     }
@@ -51,14 +54,6 @@ public sealed class Day20() : Day(2020, 20, "Jurassic Jigsaw")
         var sides = new Dictionary<string, PuzzlePiece>();
         var connections = new Dictionary<PuzzlePiece, List<PuzzlePiece>>();
 
-        void AddConnection(PuzzlePiece p1, PuzzlePiece p2)
-        {
-            if (!connections.ContainsKey(p1)) connections.Add(p1, []);
-            if (!connections.ContainsKey(p2)) connections.Add(p2, []);
-            connections[p1].Add(p2);
-            connections[p2].Add(p1);
-        }
-
         foreach (var piece in puzzlePieces)
             foreach (var (original, flipped) in piece.SidesWithFlippedPaired.Value)
             {
@@ -78,6 +73,14 @@ public sealed class Day20() : Day(2020, 20, "Jurassic Jigsaw")
             }
 
         return connections;
+
+        void AddConnection(PuzzlePiece p1, PuzzlePiece p2)
+        {
+            if (!connections.ContainsKey(p1)) connections.Add(p1, []);
+            if (!connections.ContainsKey(p2)) connections.Add(p2, []);
+            connections[p1].Add(p2);
+            connections[p2].Add(p1);
+        }
     }
 
     private static IEnumerable<PuzzlePiece[]> ComposePuzzle(Dictionary<PuzzlePiece, List<PuzzlePiece>> connections)
@@ -171,10 +174,8 @@ public sealed class Day20() : Day(2020, 20, "Jurassic Jigsaw")
 
     private static int CountSeaMonstersInImage(char[][] lines)
     {
-        const string pattern = @"(?<=#.{77})#.{4}#{2}.{4}#{2}.{4}#{3}(?=.{77}#.{2}#.{2}#.{2}#.{2}#.{2}#)";
         var singleLine = lines.Aggregate("", (curr, next) => curr + new string(next));
-        var matches = Regex.Matches(singleLine, pattern);
+        return MonsterRegex().Matches(singleLine).Count;
-        return matches.Count;
     }
 
     private class PuzzlePiece
@@ -253,4 +254,6 @@ public sealed class Day20() : Day(2020, 20, "Jurassic Jigsaw")
         private static HashSet<string> CalculateAllSidesWithFlipped(PuzzlePiece piece) =>
             piece.Sides.Value.Concat(piece.Sides.Value.Select(s => new string(s.Reverse().ToArray()))).ToHashSet();
     }
+
+    
 }

AOC2021/Day03.cs

@@ -34,9 +34,6 @@ public sealed class Day03() : Day(2021, 3, "Binary Diagnostic")
         var o = _report!;
         var c = _report!;
 
-        char MostCommon(int i, IReadOnlyCollection<string> report) =>
-            report.Count(r => r[i] == '1') >= report.Count / 2.0 ? '1' : '0';
-
         var i = 0;
         while (o.Count > 1)
         {
@@ -56,5 +53,8 @@ public sealed class Day03() : Day(2021, 3, "Binary Diagnostic")
         var co2 = c.Single().BigIntegerFromBinaryString();
 
         return o2 * co2;
+
+        char MostCommon(int index, IReadOnlyCollection<string> report) =>
+            report.Count(r => r[index] == '1') >= report.Count / 2.0 ? '1' : '0';
     }
 }

AOC2021/Day08.cs

@@ -7,6 +7,7 @@ public sealed class Day08() : Day(2021, 8, "Seven Segment Search")
 {
     private static readonly List<char[]> PossibleMappings =
         "abcdefg".ToCharArray().Permute().Select(m => m.ToArray()).ToList();
+    private static readonly int[] SearchValues = { 2, 3, 4, 7 };
 
     public override void ProcessInput()
     {
@@ -78,7 +79,7 @@ public sealed class Day08() : Day(2021, 8, "Seven Segment Search")
     public override object Part1() =>
         Input
             .Select(line => line.Split(" | ")[1].Split(' '))
-            .Select(outputs => outputs.Count(o => new[] { 2, 3, 4, 7 }.Contains(o.Length)))
+            .Select(outputs => outputs.Count(o => SearchValues.Contains(o.Length)))
             .Sum();
 
     public override object Part2() => Input.Select(Decode).Sum();

AOC2021/Day09.cs

@@ -41,12 +41,15 @@ public sealed class Day09() : Day(2021, 9, "Smoke Basin")
             var s = 0;
             var seen = new HashSet<(int x, int y)>();
 
+            MoreEnumerable.TraverseBreadthFirst((x, y), Traverse).Consume();
+            sizes.Add(s);
+            continue;
+
             IEnumerable<(int x, int y)> Traverse((int x, int y) p)
             {
                 var (i, j) = p;
                 if (_map![j][i] == '9') yield break;
-                if (seen.Contains((i, j))) yield break;
+                if (!seen.Add((i, j))) yield break;
-                seen.Add((i, j));
                 s++;
 
                 if (j > 0)
@@ -58,9 +61,6 @@ public sealed class Day09() : Day(2021, 9, "Smoke Basin")
                 if (i < _map[j].Length - 1)
                     yield return (i + 1, j);
             }
-
-            MoreEnumerable.TraverseBreadthFirst((x, y), Traverse).Consume();
-            sizes.Add(s);
         }
 
         return sizes
@@ -68,4 +68,4 @@ public sealed class Day09() : Day(2021, 9, "Smoke Basin")
             .Take(3)
             .Aggregate(1L, (a, b) => a * b);
     }
-}
+}

AOC2021/Day12.cs

@@ -13,10 +13,10 @@ public sealed class Day12() : Day(2021, 12, "Passage Pathing")
         {
             var s = line.Split('-', 2);
 
-            if (_edges.ContainsKey(s[0])) _edges[s[0]].Add(s[1]);
+            if (_edges.TryGetValue(s[0], out var edge)) edge.Add(s[1]);
             else _edges[s[0]] = [s[1]];
 
-            if (_edges.ContainsKey(s[1])) _edges[s[1]].Add(s[0]);
+            if (_edges.TryGetValue(s[1], out var edge2)) edge2.Add(s[0]);
             else _edges[s[1]] = [s[0]];
         }
     }

AOC2021/Day14.cs

@@ -21,10 +21,10 @@ public sealed class Day14() : Day(2021, 14, "Extended Polymerization")
         for (var i = 0; i < input.Length - 1; i++)
         {
             var k = input.Substring(i, 2);
-            if (_substitutionPairs!.ContainsKey(k))
+            if (_substitutionPairs!.TryGetValue(k, out var value))
             {
                 result.Append(k[0]);
-                result.Append(_substitutionPairs[k]);
+                result.Append(value);
             }
             else
             {

AOC2023/Day01.cs

@@ -2,7 +2,7 @@ namespace AOC2023;
 
 public class Day01() : Day(2023, 1, "Trebuchet?!")
 {
-    private static readonly List<string> _singleDigits =
+    private static readonly List<string> SingleDigits =
         ["zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"];
 
     public override void ProcessInput()
@@ -25,7 +25,7 @@ public class Day01() : Day(2023, 1, "Trebuchet?!")
                     continue;
                 }
 
-                foreach (var (digit, spelled) in _singleDigits.Indexed())
+                foreach (var (digit, spelled) in SingleDigits.Indexed())
                 {
                     if (i + spelled.Length - 1 < line.Length && line[i..(i + spelled.Length)] == spelled)
                     {

AdventOfCode.sln

@@ -27,9 +27,12 @@ EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{FD88DFA6-FE18-466D-B249-14FE2817D45A}"
 	ProjectSection(SolutionItems) = preProject
 		.drone.yml = .drone.yml
+		.editorconfig = .editorconfig
+		.gitignore = .gitignore
 		DayXX.cs.txt = DayXX.cs.txt
 		getday.sh = getday.sh
 		global.json = global.json
+		LICENSE = LICENSE
 		README.md = README.md
 	EndProjectSection
 EndProject