[taler-taler-ios] 04/12: Self._logChanges()

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marc-stibane pushed a commit to branch master
in repository taler-ios.

commit babe75ae2204dadb6ef2f5f1dd51432fe73b63d7
Author: Marc Stibane <marc@taler.net>
AuthorDate: Sun Oct 29 15:17:32 2023 +0100

    Self._logChanges()
---
 TalerWallet1/Views/Main/MainView.swift | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/TalerWallet1/Views/Main/MainView.swift 
b/TalerWallet1/Views/Main/MainView.swift
index a53dfb7..301ad27 100644
--- a/TalerWallet1/Views/Main/MainView.swift
+++ b/TalerWallet1/Views/Main/MainView.swift
@@ -139,8 +139,16 @@ extension MainView {
 
         var body: some View {
 #if DEBUG
-            let _ = Self._printChanges()
-            let _ = symLog?.vlog()       // just to get the # to compare it 
with .onAppear & onDisappear
+            // "@self" marks that the view value itself has changed, and 
"@identity" marks that the
+            // identity of the view has changed (that is, that the persistent 
data associated with
+            // the view has been recycled for a new instance of the same type)
+            if #available(iOS 17.1, *) {
+                // logs at INFO level, “com.apple.SwiftUI” subsystem, category 
“Changed Body Properties”
+                let _ = Self._logChanges()
+            } else {
+                let _ = Self._printChanges()
+            }
+            let _ = symLog?.vlog()       // just to get the identity # to 
compare with .onAppear & .onDisappear
 #endif
           Group {
 #if TABBAR  // Taler Wallet

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