diff --git a/AdventOfCode.Common/AdventOfCode.Common.csproj b/AdventOfCode.Common/AdventOfCode.Common.csproj
index 742dce4..31e67fa 100644
--- a/AdventOfCode.Common/AdventOfCode.Common.csproj
+++ b/AdventOfCode.Common/AdventOfCode.Common.csproj
@@ -3,8 +3,8 @@
net8.0
enable
- AdventOfCode.Common
enable
+ AdventOfCode.Common
diff --git a/AdventOfCode2017.Tests/AdventOfCode2017.Tests.csproj b/AdventOfCode2017.Tests/AdventOfCode2017.Tests.csproj
index 3c7d317..be33a54 100644
--- a/AdventOfCode2017.Tests/AdventOfCode2017.Tests.csproj
+++ b/AdventOfCode2017.Tests/AdventOfCode2017.Tests.csproj
@@ -3,9 +3,11 @@
net8.0
enable
+ enable
AdventOfCode2017.Tests
false
+ true
diff --git a/AdventOfCode2017/AdventOfCode2017.csproj b/AdventOfCode2017/AdventOfCode2017.csproj
index a9ecb47..272cef0 100644
--- a/AdventOfCode2017/AdventOfCode2017.csproj
+++ b/AdventOfCode2017/AdventOfCode2017.csproj
@@ -4,6 +4,7 @@
Exe
net8.0
enable
+ enable
AdventOfCode2017
diff --git a/AdventOfCode2017/Day03.cs b/AdventOfCode2017/Day03.cs
index ae02610..9680899 100644
--- a/AdventOfCode2017/Day03.cs
+++ b/AdventOfCode2017/Day03.cs
@@ -30,11 +30,11 @@ public class Day03 : IDay
{
public string ResolvePart1(string[] inputs)
{
- return null;
+ return string.Empty;
}
public string ResolvePart2(string[] inputs)
{
- return null;
+ return string.Empty;
}
}
\ No newline at end of file
diff --git a/AdventOfCode2018.Tests/AdventOfCode2018.Tests.csproj b/AdventOfCode2018.Tests/AdventOfCode2018.Tests.csproj
index 6d9a17c..3b7a6db 100644
--- a/AdventOfCode2018.Tests/AdventOfCode2018.Tests.csproj
+++ b/AdventOfCode2018.Tests/AdventOfCode2018.Tests.csproj
@@ -3,9 +3,11 @@
net8.0
enable
+ enable
AdventOfCode2018.Tests
false
+ true
diff --git a/AdventOfCode2018/AdventOfCode2018.csproj b/AdventOfCode2018/AdventOfCode2018.csproj
index 9a95a67..13319b9 100644
--- a/AdventOfCode2018/AdventOfCode2018.csproj
+++ b/AdventOfCode2018/AdventOfCode2018.csproj
@@ -4,6 +4,7 @@
Exe
net8.0
enable
+ enable
AdventOfCode2018
diff --git a/AdventOfCode2018/Day01.cs b/AdventOfCode2018/Day01.cs
index 6061a6d..126f01f 100644
--- a/AdventOfCode2018/Day01.cs
+++ b/AdventOfCode2018/Day01.cs
@@ -82,7 +82,7 @@ public class Day01 : IDay
public string ResolvePart2(string[] inputs)
{
int accumulator = 0;
- List accumulatorHistory = new();
+ List accumulatorHistory = [];
int? repeatedAccumulator = null;
while (repeatedAccumulator == null)
{
@@ -108,6 +108,6 @@ public class Day01 : IDay
}
}
}
- return repeatedAccumulator.ToString();
+ return repeatedAccumulator.ToString() ?? string.Empty;
}
}
\ No newline at end of file
diff --git a/AdventOfCode2018/Day03.cs b/AdventOfCode2018/Day03.cs
index bd6d7dd..ea871bb 100644
--- a/AdventOfCode2018/Day03.cs
+++ b/AdventOfCode2018/Day03.cs
@@ -94,7 +94,7 @@ public class Day03 : IDay
{
List claims = inputs.Select(Claim.FromString).ToList();
- Claim unOverlappingClaim = null;
+ Claim? unOverlappingClaim = null;
for (int i = 0; i < claims.Count; i++)
{
bool overlaps = false;
@@ -113,7 +113,7 @@ public class Day03 : IDay
break;
}
}
- return unOverlappingClaim.ID.ToString();
+ return unOverlappingClaim?.ID.ToString() ?? string.Empty;
}
diff --git a/AdventOfCode2018/Day04.cs b/AdventOfCode2018/Day04.cs
index b9b9bef..cc27232 100644
--- a/AdventOfCode2018/Day04.cs
+++ b/AdventOfCode2018/Day04.cs
@@ -71,7 +71,7 @@ public class Day04 : IDay
Dictionary dictFullHistogram = BuildFullHistogram(guardEvents);
// Find sleepier guard
- GuardSleepHistogram highestSleeperHistogram = null;
+ GuardSleepHistogram? highestSleeperHistogram = null;
long highestTotalSleep = long.MinValue;
foreach (GuardSleepHistogram guardHistogram in dictFullHistogram.Values)
{
@@ -83,6 +83,7 @@ public class Day04 : IDay
highestTotalSleep = totalSleep;
}
}
+ if (highestSleeperHistogram == null) { return string.Empty; }
// Find sleepier minute
int maxSleepMinute = int.MinValue;
diff --git a/AdventOfCode2018/Day06.cs b/AdventOfCode2018/Day06.cs
index 29dec71..d140bdc 100644
--- a/AdventOfCode2018/Day06.cs
+++ b/AdventOfCode2018/Day06.cs
@@ -97,6 +97,7 @@ public class Day06 : IDay
return inputs
.Where(input => string.IsNullOrEmpty(input) == false)
.Select(ChronoPoint.FromString)
+ .OfType()
.ToList();
}
@@ -197,7 +198,7 @@ public class Day06 : IDay
public int X { get; set; }
public int Y { get; set; }
- public static ChronoPoint FromString(string strPoint)
+ public static ChronoPoint? FromString(string strPoint)
{
if (string.IsNullOrEmpty(strPoint)) { return null; }
string[] parts = strPoint.Split([", "], StringSplitOptions.RemoveEmptyEntries);
diff --git a/AdventOfCode2018/Day07.cs b/AdventOfCode2018/Day07.cs
index e00231a..c2a32b3 100644
--- a/AdventOfCode2018/Day07.cs
+++ b/AdventOfCode2018/Day07.cs
@@ -204,7 +204,7 @@ public class Day07 : IDay
private class SimulatedWorker
{
- public InstructionNode CurrentInstruction { get; private set; }
+ public InstructionNode? CurrentInstruction { get; private set; }
private int ElapsedTime { get; set; }
public void SetInstruction(InstructionNode instruction)
diff --git a/AdventOfCode2018/Day09.cs b/AdventOfCode2018/Day09.cs
index 8e077cb..a1c70e2 100644
--- a/AdventOfCode2018/Day09.cs
+++ b/AdventOfCode2018/Day09.cs
@@ -87,16 +87,16 @@ public class Day09 : IDay
public class Marble
{
public long Value { get; init; }
- public Marble Previous { get; set; }
- public Marble Next { get; set; }
+ public Marble? Previous { get; set; }
+ public Marble? Next { get; set; }
}
public class MarbleGame
{
private Dictionary Scores { get; } = new();
- private Marble _firstMarble;
- private Marble _currentMarble;
+ private Marble? _firstMarble;
+ private Marble? _currentMarble;
private long _currentPlayer;
private const long PointValueMultiple = 23;
@@ -119,8 +119,8 @@ public class Day09 : IDay
Marble newMarble = new() { Value = i + 1 };
if ((newMarble.Value % PointValueMultiple) > 0)
{
- Marble previousMarble = _currentMarble.Next;
- Marble nextMarble = previousMarble.Next;
+ Marble? previousMarble = _currentMarble?.Next;
+ Marble? nextMarble = previousMarble?.Next;
newMarble.Previous = previousMarble;
newMarble.Next = nextMarble;
previousMarble.Next = newMarble;
@@ -129,7 +129,7 @@ public class Day09 : IDay
}
else
{
- Marble marbleToRemove = _currentMarble.Previous.Previous.Previous.Previous.Previous.Previous.Previous;
+ Marble? marbleToRemove = _currentMarble?.Previous?.Previous?.Previous?.Previous?.Previous?.Previous?.Previous;
_currentMarble = marbleToRemove.Next;
marbleToRemove.Previous.Next = marbleToRemove.Next;
marbleToRemove.Next.Previous = marbleToRemove.Previous;
diff --git a/AdventOfCode2018/Day12.cs b/AdventOfCode2018/Day12.cs
index a57f2bd..484630b 100644
--- a/AdventOfCode2018/Day12.cs
+++ b/AdventOfCode2018/Day12.cs
@@ -111,8 +111,8 @@ public class Day12 : IDay
private readonly List _initialState = [];
private readonly List _rules = [];
private long _offsetField;
- private bool[] _field;
- private bool[] _workField;
+ private bool[]? _field;
+ private bool[]? _workField;
private void Initialize(string[] inputs)
{
diff --git a/AdventOfCode2018/Day13.cs b/AdventOfCode2018/Day13.cs
index d1a07fe..c8b0bce 100644
--- a/AdventOfCode2018/Day13.cs
+++ b/AdventOfCode2018/Day13.cs
@@ -371,7 +371,7 @@ public class Day13 : IDay
private int _width;
private int _height;
- private char[,] _grid;
+ private char[,]? _grid;
private readonly List _trains = [];
private void Initialize(string[] inputs)
@@ -430,9 +430,9 @@ public class Day13 : IDay
}
}
- private Train SimulateForFirstCollision()
+ private Train? SimulateForFirstCollision()
{
- Train collidingTrain = null;
+ Train? collidingTrain = null;
IEnumerable orderedTrains = _trains.OrderBy(t => t.X + (t.Y * _width));
foreach (Train t in orderedTrains)
{
@@ -443,13 +443,13 @@ public class Day13 : IDay
return collidingTrain;
}
- private Train SimulateForLastCart()
+ private Train? SimulateForLastCart()
{
List orderedTrains = _trains.OrderBy(t => t.X + (t.Y * _width)).ToList();
foreach (Train t in orderedTrains)
{
t.Simulate(_grid);
- Train collidingTrain = _trains.FirstOrDefault(x => x.X == t.X && x.Y == t.Y && t != x);
+ Train? collidingTrain = _trains.FirstOrDefault(x => x.X == t.X && x.Y == t.Y && t != x);
if (collidingTrain != null)
{
_trains.Remove(t);
@@ -470,7 +470,7 @@ public class Day13 : IDay
{
for (int i = 0; i < _width; i++)
{
- Train t = _trains.FirstOrDefault(x => x.X == i && x.Y == j);
+ Train? t = _trains.FirstOrDefault(x => x.X == i && x.Y == j);
if (t != null)
{
if (t.Direction == TrainDirection.North)
diff --git a/AdventOfCode2018/Day15.cs b/AdventOfCode2018/Day15.cs
index 394969d..dd13f51 100644
--- a/AdventOfCode2018/Day15.cs
+++ b/AdventOfCode2018/Day15.cs
@@ -509,7 +509,7 @@ public class Day15 : IDay
.ThenBy(e => e.X);
}
- private Entity GetBestInRangeTarget(Entity entity, IEnumerable targets)
+ private Entity? GetBestInRangeTarget(Entity entity, IEnumerable targets)
{
return targets
.Where(entity.InRangeOf)
diff --git a/AdventOfCode2018/Day16.cs b/AdventOfCode2018/Day16.cs
index 2c40861..97423b7 100644
--- a/AdventOfCode2018/Day16.cs
+++ b/AdventOfCode2018/Day16.cs
@@ -87,8 +87,8 @@ public class Day16 : IDay
int count = 0;
int i = 0;
bool end = false;
- int[] beforeRegisters = null;
- int[] instruction = null;
+ int[]? beforeRegisters = null;
+ int[]? instruction = null;
const string beforeKeyword = "Before: [";
const string afterKeyword = "After: [";
while (inputs.Length > i)
diff --git a/AdventOfCode2018/Day23.cs b/AdventOfCode2018/Day23.cs
index ef92cd1..4988ca6 100644
--- a/AdventOfCode2018/Day23.cs
+++ b/AdventOfCode2018/Day23.cs
@@ -68,8 +68,8 @@ public class Day23 : IDay
public string ResolvePart1(string[] inputs)
{
List nanoBots = NanoBot.ListFromStrings(inputs);
- NanoBot bestNanoBot = nanoBots.OrderBy(nanoBot => nanoBot.Range).LastOrDefault();
- int countInRange = nanoBots.Count(nanoBot => bestNanoBot.InRange(nanoBot));
+ NanoBot? bestNanoBot = nanoBots.OrderBy(nanoBot => nanoBot.Range).LastOrDefault();
+ int countInRange = nanoBots.Count(nanoBot => bestNanoBot?.InRange(nanoBot) == true);
return countInRange.ToString();
}
@@ -150,7 +150,7 @@ public class Day23 : IDay
public long Z { get; private init; }
public long Range { get; private init; }
- private static NanoBot FromString(string strInput)
+ private static NanoBot? FromString(string strInput)
{
string[] parts = strInput.Split(["pos=<", ",", ">, r="], StringSplitOptions.RemoveEmptyEntries);
if (parts.Length != 4) { return null; }
@@ -167,7 +167,7 @@ public class Day23 : IDay
{
List nanoBots = inputs
.Select(FromString)
- .Where(nanoBot => nanoBot != null)
+ .OfType()
.ToList();
return nanoBots;
}
diff --git a/AdventOfCode2020.Tests/AdventOfCode2020.Tests.csproj b/AdventOfCode2020.Tests/AdventOfCode2020.Tests.csproj
index cb63640..c99e3d7 100644
--- a/AdventOfCode2020.Tests/AdventOfCode2020.Tests.csproj
+++ b/AdventOfCode2020.Tests/AdventOfCode2020.Tests.csproj
@@ -3,9 +3,11 @@
net8.0
enable
+ enable
AdventOfCode2020.Tests
false
+ true
diff --git a/AdventOfCode2020/AdventOfCode2020.csproj b/AdventOfCode2020/AdventOfCode2020.csproj
index 40ec99a..9461cbc 100644
--- a/AdventOfCode2020/AdventOfCode2020.csproj
+++ b/AdventOfCode2020/AdventOfCode2020.csproj
@@ -4,6 +4,7 @@
Exe
net8.0
enable
+ enable
AdventOfCode2020
diff --git a/AdventOfCode2020/Day05.cs b/AdventOfCode2020/Day05.cs
index 544d859..c67a895 100644
--- a/AdventOfCode2020/Day05.cs
+++ b/AdventOfCode2020/Day05.cs
@@ -64,7 +64,7 @@ public class Day05 : IDay
int maxSerialNumber = 0;
foreach (string input in inputs)
{
- Seat seat = Seat_Parse(input);
+ Seat? seat = Seat_Parse(input);
if (seat == null) { continue; }
int newSerialNumber = seat.GetSerialNumber();
if (newSerialNumber > maxSerialNumber) { maxSerialNumber = newSerialNumber; }
@@ -83,7 +83,7 @@ public class Day05 : IDay
}
foreach (string input in inputs)
{
- Seat seat = Seat_Parse(input);
+ Seat? seat = Seat_Parse(input);
if (seat == null) { continue; }
seats[seat.Column][seat.Row] = 'X';
@@ -166,7 +166,7 @@ public class Day05 : IDay
}
}
- private Seat Seat_Parse(string input)
+ private Seat? Seat_Parse(string input)
{
if (input.Length != 10 ||
input.All(c => c == 'F' || c == 'B' || c == 'L' || c == 'R') == false
diff --git a/AdventOfCode2020/Day07.cs b/AdventOfCode2020/Day07.cs
index 5309cf3..551b04c 100644
--- a/AdventOfCode2020/Day07.cs
+++ b/AdventOfCode2020/Day07.cs
@@ -141,7 +141,7 @@ public class Day07 : IDay
BaggageRule rule = new() {
Contain = [],
};
- BaggageContainRule containRule = null;
+ BaggageContainRule? containRule = null;
string color1 = string.Empty;
foreach (string word in words)
diff --git a/AdventOfCode2023.Tests/AdventOfCode2023.Tests.csproj b/AdventOfCode2023.Tests/AdventOfCode2023.Tests.csproj
index 916f355..478c6be 100644
--- a/AdventOfCode2023.Tests/AdventOfCode2023.Tests.csproj
+++ b/AdventOfCode2023.Tests/AdventOfCode2023.Tests.csproj
@@ -3,10 +3,11 @@
net8.0
enable
- AdventOfCode2023.Tests
enable
+ AdventOfCode2023.Tests
false
+ true
diff --git a/AdventOfCode2023/AdventOfCode2023.csproj b/AdventOfCode2023/AdventOfCode2023.csproj
index 099f4ac..e2244a7 100644
--- a/AdventOfCode2023/AdventOfCode2023.csproj
+++ b/AdventOfCode2023/AdventOfCode2023.csproj
@@ -4,8 +4,8 @@
Exe
net8.0
enable
- AdventOfCode2023
enable
+ AdventOfCode2023
diff --git a/AdventOfCode2024.Tests/AdventOfCode2024.Tests.csproj b/AdventOfCode2024.Tests/AdventOfCode2024.Tests.csproj
index 3497b52..ef5f3ae 100644
--- a/AdventOfCode2024.Tests/AdventOfCode2024.Tests.csproj
+++ b/AdventOfCode2024.Tests/AdventOfCode2024.Tests.csproj
@@ -3,8 +3,8 @@
net8.0
enable
- AdventOfCode2024.Tests
enable
+ AdventOfCode2024.Tests
false
true
@@ -17,10 +17,6 @@
runtime; build; native; contentfiles; analyzers; buildtransitive
all
-
- runtime; build; native; contentfiles; analyzers; buildtransitive
- all
-
diff --git a/AdventOfCode2024/AdventOfCode2024.csproj b/AdventOfCode2024/AdventOfCode2024.csproj
index f097193..eb2cab6 100644
--- a/AdventOfCode2024/AdventOfCode2024.csproj
+++ b/AdventOfCode2024/AdventOfCode2024.csproj
@@ -4,8 +4,8 @@
Exe
net8.0
enable
- AdventOfCode2024
enable
+ AdventOfCode2024