Fixes for Swift 6

Author: danielctull

Advent/Sources/Conversion/RawRepresentable.swift

@@ -1,5 +1,5 @@
 
-extension RawRepresentable {
+extension RawRepresentable where RawValue: Sendable {
 
     public init(_ rawValue: RawValue) throws {
 
@@ -11,7 +11,7 @@ extension RawRepresentable {
     }
 }
 
-public struct UnexpectedRawValue<RawValue>: Error {
+public struct UnexpectedRawValue<RawValue: Sendable>: Error {
     let rawValue: RawValue
     public init(rawValue: RawValue) {
         self.rawValue = rawValue

Advent/Sources/Geometry/Angle.swift

@@ -15,7 +15,7 @@ public struct Angle {
 
 extension Angle {
 
-    public static let zero = Angle(radians: 0)
+    public static var zero: Angle { Angle(radians: 0) }
 
     public init(degrees: Double) {
         self.init(radians: degrees/360 * .tau)

Advent/Sources/Geometry/Grid.swift

@@ -158,7 +158,7 @@ extension Grid where Location == Position2D<Int>, Tile: RawRepresentable {
     /// If you have an array of array of Ints this works! :D
     ///
     /// - Parameter characters: The sequence of sequences of raw values.
-    public init<Rows, Columns, RawValue>(
+    public init<Rows, Columns, RawValue: Sendable>(
         origin: Origin = .bottomLeft,
         rawValues: Rows
     ) throws

Advent/Sources/Strings/Regex.swift

@@ -19,19 +19,23 @@ extension Regex {
 
 extension TryCapture where Output == (Substring, Int) {
 
-    public static let integer = TryCapture {
-        OneOrMore(.digit)
-    } transform: {
-        Int($0)
+    public static var integer: Self {
+        TryCapture {
+            OneOrMore(.digit)
+        } transform: {
+            Int($0)
+        }
     }
 }
 
 extension TryCapture where Output == (Substring, Character) {
 
-    public static let character = TryCapture {
-        One(.any)
-    } transform: {
-        $0.first
+    public static var character: Self {
+        TryCapture {
+            One(.any)
+        } transform: {
+            $0.first
+        }
     }
 }
 
@@ -49,16 +53,20 @@ extension TryCapture {
 
 extension Capture where Output == (Substring, String) {
 
-    public static let string = Capture {
-        OneOrMore(.any)
-    } transform: {
-        String($0)
+    public static var string: Self {
+        Capture {
+           OneOrMore(.any)
+       } transform: {
+           String($0)
+       }
     }
 
-    public static let alpha = Capture {
-        OneOrMore(.word)
-    } transform: {
-        String($0)
+    public static var alpha: Self {
+        Capture {
+           OneOrMore(.word)
+       } transform: {
+           String($0)
+       }
     }
 }
 

Year2015/Sources/Day06.swift

@@ -100,24 +100,26 @@ extension Day06 {
             case off = "turn off"
         }
 
-        private static let regex = Regex {
-            TryCapture {
-                ChoiceOf {
-                    "turn on"
-                    "toggle"
-                    "turn off"
+        private static var regex: Regex<(Substring, Day06.Instruction.Kind, Int, Int, Int, Int)> {
+            Regex {
+                TryCapture {
+                    ChoiceOf {
+                        "turn on"
+                        "toggle"
+                        "turn off"
+                    }
+                } transform: {
+                    Kind(rawValue: String($0))
                 }
-            } transform: {
-                Kind(rawValue: String($0))
+                " "
+                TryCapture.integer
+                ","
+                TryCapture.integer
+                " through "
+                TryCapture.integer
+                ","
+                TryCapture.integer
             }
-            " "
-            TryCapture.integer
-            ","
-            TryCapture.integer
-            " through "
-            TryCapture.integer
-            ","
-            TryCapture.integer
         }
 
         let kind: Kind