Improved examples.

README.md

@@ -110,14 +110,9 @@ For example, you can request the list of available products in JSON from an imag
 var request = URLRequest(url: URL(string: "https://example-store.com/products")!)
 let contentType: MediaType = "application/json"
 
-request.setValue(
-  "Content-Type",
-  forHTTPHeaderField: "\(contentType)"
-) // is equivalent to
-request.setValue(
-  "Content-Type",
-  forHTTPHeaderField: contentType.description
-)
+// The following two statements are equivalent
+request.setValue("Content-Type", forHTTPHeaderField: "\(contentType)")
+request.setValue("Content-Type", forHTTPHeaderField: contentType.description)
 
 let (_, response) = try await URLSession.shared.data(for: request)
 ```
@@ -128,9 +123,7 @@ This means you can use ``MediaType``s in sets or dictionaries. For example, you
 application supports like so:
 
 ```swift
-let supportedImages: Set<MediaType> = [
-  .image(.png()), .image(.gif()), .image(.jpeg())
-]
+let supportedImages: Set<MediaType> = ["image/png", "image/gif", "image/jpeg"]
 ```
 
 ### Comparing Media Types

Sources/MediaType/Font.swift

@@ -16,7 +16,7 @@ import Foundation
 /// func isSupported(font: Font) -> Bool {
 ///   switch font {
 ///   case .woff, .woff2: return true
-///   case .ttf(_, let parameters): return !(parameters ?? [:]).isEmpty
+///   case .ttf(_, let parameters?): return !parameters.isEmpty
 ///   default: return false
 ///   }
 /// }

Tests/MediaTypeTests/CodeExamples/CodeExamples+Font.swift

@@ -12,7 +12,7 @@ extension CodeExamples {
     func isSupported(font: Font) -> Bool {
       switch font {
       case .woff, .woff2: return true
-      case .ttf(_, let parameters): return !(parameters ?? [:]).isEmpty
+      case .ttf(_, let parameters?): return !parameters.isEmpty
       default: return false
       }
     }

Tests/MediaTypeTests/CodeExamples/CodeExamples+MediaType.swift

@@ -80,4 +80,9 @@ extension CodeExamples {
     XCTAssertFalse(isSupported("application/atom"))
     XCTAssertFalse(isSupported("application/atom;charset=utf-8"))
   }
+
+  func test_supported_media_types() {
+    let supportedImages: Set<MediaType> = ["image/png", "image/gif", "image/jpeg"]
+    XCTAssertEqual(supportedImages, [.image(.png()), .image(.jpeg()), .image(.gif())])
+  }
 }

UtilityScripts/MediaDocumentations.mjs

@@ -127,7 +127,7 @@ export const mediaDocumentations = {
                 "func isSupported(font: Font) -> Bool {",
                 "  switch font {",
                 "  case .woff, .woff2: return true",
-                "  case .ttf(_, let parameters): return !(parameters ?? [:]).isEmpty",
+                "  case .ttf(_, let parameters?): return !parameters.isEmpty",
                 "  default: return false",
                 "  }",
                 "}",