Saving data first time in UserDefaults on macOS creates a plist file at Containers folder path but after deleting and saving different data next time, previuos data(before deleting the app folder) also populates in plist file.
if let test = UserDefaults(suiteName: "my_test_app_userdefaults_suite") {
test.setValue("opt_in_1", forKey: "email_1")
test.setValue("opt_in_2", forKey: "email_2")
test.setValue("opt_in_3", forKey: "email_3")
test.synchronize()
}
Steps:
Run the macOS app with above source code, which saves key-value pairs in UserDefaults.
Checked the UserDefaults plist at path /Users/rahulmahajan/Library/Containers/com.TestuUserDefaults/Data/Library/Preferences/my_test_app_userdefaults_suite.plist and all the data is available there, which is good.
Now, deleted the app folder at path /Users/rahulmahajan/Library/Containers/com.TestuUserDefaults.
Commented the opt_in_2 and opt_in_3 statements, ran the app.
Checked the plist at path from Step-2, the lines commented in Step-4 are auto-populated in plist.
rahulmahajan
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