From f451e0aa7729175a96d9cbae7b2f5edc98e4ed02 Mon Sep 17 00:00:00 2001
From: Ben Harris <ben@tilde.team>
Date: Mon, 18 Sep 2023 14:47:41 -0400
Subject: [PATCH] trygetvalue!

---
 AOC2015/Day07.cs | 16 ++++++++--------
 AOC2019/Day14.cs |  3 +--
 AOC2020/Day20.cs |  8 +++-----
 3 files changed, 12 insertions(+), 15 deletions(-)

diff --git a/AOC2015/Day07.cs b/AOC2015/Day07.cs
index 7de459e..548db20 100644
--- a/AOC2015/Day07.cs
+++ b/AOC2015/Day07.cs
@@ -44,7 +44,7 @@ public sealed class Day07 : Day
                     {
                         _actions.Add(destination, () =>
                         {
-                            if (_wires.ContainsKey(destination)) return _wires[destination];
+                            if (_wires.TryGetValue(destination, out var wire)) return wire;
 
                             var res = _actions[split[0]]();
                             _wires.Add(destination, res);
@@ -62,7 +62,7 @@ public sealed class Day07 : Day
                         case "AND":
                             _actions.Add(destination, () =>
                             {
-                                if (_wires.ContainsKey(destination)) return _wires[destination];
+                                if (_wires.TryGetValue(destination, out var wire)) return wire;
 
                                 var res = (ushort)((ushort.TryParse(split[0], out var v)
                                     ? v
@@ -74,7 +74,7 @@ public sealed class Day07 : Day
                         case "OR":
                             _actions.Add(destination, () =>
                             {
-                                if (_wires.ContainsKey(destination)) return _wires[destination];
+                                if (_wires.TryGetValue(destination, out var wire)) return wire;
 
                                 var res = (ushort)((ushort.TryParse(split[0], out var v)
                                     ? v
@@ -86,7 +86,7 @@ public sealed class Day07 : Day
                         case "LSHIFT":
                             _actions.Add(destination, () =>
                             {
-                                if (_wires.ContainsKey(destination)) return _wires[destination];
+                                if (_wires.TryGetValue(destination, out var wire)) return wire;
 
                                 var res = (ushort)(_actions[split[0]]() << ushort.Parse(split[2]));
                                 _wires.Add(destination, res);
@@ -96,7 +96,7 @@ public sealed class Day07 : Day
                         case "RSHIFT":
                             _actions.Add(destination, () =>
                             {
-                                if (_wires.ContainsKey(destination)) return _wires[destination];
+                                if (_wires.TryGetValue(destination, out var wire)) return wire;
 
                                 var res = (ushort)(_actions[split[0]]() >> ushort.Parse(split[2]));
                                 _wires.Add(destination, res);
@@ -114,10 +114,10 @@ public sealed class Day07 : Day
     {
         ProcessInstructions();
         var p1 = _actions["a"]();
-        
+
         ProcessInstructions();
-        
+
         _actions["b"] = () => p1;
         return _actions["a"]();
     }
-}
+}
\ No newline at end of file
diff --git a/AOC2019/Day14.cs b/AOC2019/Day14.cs
index 8f2dc48..1abc5a5 100644
--- a/AOC2019/Day14.cs
+++ b/AOC2019/Day14.cs
@@ -21,8 +21,7 @@ public sealed class Day14 : Day
         if (quantity <= 0)
             throw new ArgumentOutOfRangeException(nameof(quantity));
 
-        if (!_available.ContainsKey(chem))
-            _available[chem] = 0;
+        _available.TryAdd(chem, 0);
 
         if (_available[chem] < quantity && !Produce(chem, quantity - _available[chem]))
             return false;
diff --git a/AOC2020/Day20.cs b/AOC2020/Day20.cs
index 2ea680d..f21bb8c 100644
--- a/AOC2020/Day20.cs
+++ b/AOC2020/Day20.cs
@@ -66,14 +66,12 @@ public sealed class Day20 : Day
         foreach (var piece in puzzlePieces)
         foreach (var (original, flipped) in piece.SidesWithFlippedPaired.Value)
         {
-            if (sides.ContainsKey(original))
+            if (sides.TryGetValue(original, out var side))
             {
-                var otherPiece = sides[original];
-                AddConnection(piece, otherPiece);
+                AddConnection(piece, side);
             }
-            else if (sides.ContainsKey(flipped))
+            else if (sides.TryGetValue(flipped, out var otherPiece))
             {
-                var otherPiece = sides[flipped];
                 AddConnection(piece, otherPiece);
             }
             else