Refactor

Examples/xx-messenger/Sources/AppCore/SharedUI/Data+hexString.swift

 import Foundation
 
 extension Data {
-  public var hexString: String {
-    map { String(format: "%02hhx ", $0) }.joined()
+  public func hexString(bytesSeparator: String = " ") -> String {
+    map { String(format: "%02hhx\(bytesSeparator)", $0) }.joined()
   }
 }

Examples/xx-messenger/Sources/ContactFeature/ContactView.swift

@@ -111,7 +111,7 @@ public struct ContactView: View {
 
         if let dbContact = viewStore.dbContact {
           Section {
-            Label(dbContact.id.hexString, systemImage: "number")
+            Label(dbContact.id.hexString(), systemImage: "number")
               .font(.footnote.monospaced())
             Label(dbContact.username ?? "", systemImage: "person")
             Label(dbContact.email ?? "", systemImage: "envelope")

Examples/xx-messenger/Sources/ContactLookupFeature/ContactLookupView.swift

@@ -25,7 +25,7 @@ public struct ContactLookupView: View {
     WithViewStore(store, observe: ViewState.init) { viewStore in
       Form {
         Section {
-          Label(viewStore.id.hexString, systemImage: "number")
+          Label(viewStore.id.hexString(), systemImage: "number")
             .font(.footnote.monospaced())
 
           Button {

Examples/xx-messenger/Sources/MyContactFeature/MyContactView.swift

@@ -51,7 +51,7 @@ public struct MyContactView: View {
     WithViewStore(store, observe: ViewState.init) { viewStore in
       Form {
         Section {
-          Text(viewStore.contact?.id.hexString ?? "")
+          Text(viewStore.contact?.id.hexString() ?? "")
             .font(.footnote.monospaced())
             .textSelection(.enabled)
         } header: {