add iOS

iOS-SwiftUI-Code/GRDB.swift-6.29.3/GRDB/Utils/CaseInsensitiveIdentifier.swift

@@ -0,0 +1,19 @@
+/// A case-preserving, case-insensitive identifier
+/// that matches the ASCII version of sqlite3_stricmp
+struct CaseInsensitiveIdentifier: Hashable {
+    private let lowercased: String
+    let rawValue: String
+    
+    init(rawValue: String) {
+        self.lowercased = rawValue.lowercased()
+        self.rawValue = rawValue
+    }
+    
+    static func == (lhs: CaseInsensitiveIdentifier, rhs: CaseInsensitiveIdentifier) -> Bool {
+        lhs.lowercased == rhs.lowercased
+    }
+    
+    func hash(into hasher: inout Hasher) {
+        hasher.combine(lowercased)
+    }
+}