NumericTextStyle/locale(\_:) now only transforms the style if locales are different. This skips one NSCache lookup per update, in most cases (and always when the user cares enough to set locale on init). Cleanup.

Author: oscbyspro

Examples/iOS/App/Screens/Numeric/NumericScreenExamples.swift

@@ -57,13 +57,21 @@ struct NumericScreenExamples: View {
 
     @ViewBuilder var examples: some View {
         switch kind.content {
-        case .number:   example(.number)
-        case .currency: example(.currency(code: currency.content))
-        case .percent:  example(.percent)
+        case .currency: currencyExample
+        case   .number:   numberExample
+        case  .percent:  percentExample
         }
     }
 
-    func example<F: NumericTextFormat>(_ base: _NumericTextStyle<F>) -> some View where F.FormatInput == Value {
-        NumericScreenExample(context, base: base)
+    @inlinable var currencyExample: some View {
+        NumericScreenExample(context, base: _NumericTextStyle<Currency>(code: currency.content, locale: locale.content))
+    }
+    
+    @inlinable var numberExample: some View {
+        NumericScreenExample(context, base: _NumericTextStyle<Number>(locale: locale.content))
+    }
+    
+    @inlinable var percentExample: some View {
+        NumericScreenExample(context, base: _NumericTextStyle<Percent>(locale: locale.content))
     }
 }

Sources/DiffableTextStylesXNumeric/Helpers/Adapter.swift

@@ -33,6 +33,14 @@ import Foundation
         self.scheme = format.scheme()
     }
 
+    //=------------------------------------------------------------------------=
+    // MARK: Accessors
+    //=------------------------------------------------------------------------=
+    
+    @inlinable var locale: Locale {
+        format.locale
+    }
+    
     //=------------------------------------------------------------------------=
     // MARK: Preferences
     //=------------------------------------------------------------------------=
@@ -49,8 +57,8 @@ import Foundation
     // MARK: Transformations
     //=------------------------------------------------------------------------=
 
-    @inlinable func locale(_ locale: Locale) -> Self {
-        Self(format.locale(locale))
+    @inlinable mutating func update(_ locale: Locale) {
+        self = Self(format.locale(locale))
     }
 
     //=------------------------------------------------------------------------=
@@ -61,3 +69,14 @@ import Foundation
         lhs.format == rhs.format
     }
 }
+
+extension Adapter where Format: Formats.Currency {
+    
+    //=------------------------------------------------------------------------=
+    // MARK: Accessors
+    //=------------------------------------------------------------------------=
+    
+    @inlinable var currencyCode: String {
+        format.currencyCode
+    }
+}

Sources/DiffableTextStylesXNumeric/Style+Currency.swift

@@ -29,7 +29,7 @@ extension NumericTextStyle where Format: NumericTextFormatXCurrency {
     //=------------------------------------------------------------------------=
 
     @inlinable public var currencyCode: String {
-        adapter.format.currencyCode
+        adapter.currencyCode
     }
 }
 

Sources/DiffableTextStylesXNumeric/Style.swift

@@ -60,11 +60,12 @@ public struct _NumericTextStyle<Format: NumericTextFormat>: DiffableTextStyle {
     //=------------------------------------------------------------------------=
 
     @inlinable public var locale: Locale {
-        adapter.format.locale
+        adapter.locale
     }
-
+    
     @inlinable public func locale(_ locale: Locale) -> Self {
-        var result = self; result.adapter = result.adapter.locale(locale); return result
+        guard self.locale != locale else { return self }
+        var result = self; result.adapter.update(locale); return result
     }
 
     //=------------------------------------------------------------------------=