What will happen if add UIView as a subview to itself [closed] - ios

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What are all bad things doing it?
What will happen if changing properties on it?
Will it go in some kind of recursion?

Basically the app would go into an endless recursion and crash eventually, as soon as you try and show it.
More on that, at this fine article by Mike Ash - https://www.mikeash.com/pyblog/friday-qa-2014-01-10-lets-break-cocoa.html

Will crash: "Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Can't add self as subview'"

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Firebase console shows Unknown App [closed]

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Closed 4 years ago.
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I configured firebase properly, but when I try to send test notification I see
And then notification is not delivered.
I became normal after 2 hours :)

'Super' cannot be used outside of class members in XCode7 swift2 [closed]

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Closed 6 years ago.
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Iam getting a number of errors, please help me out. I am budding developer...
You've put a closing brace } after the email IBOutlet which signifies the end of class scope at that line. Remove that.

In my iPhone application. why i am getting the "Received memory warning"? [closed]

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I am getting this warning in iPhone app "[651:57011] Received memory warning". can any body please help me to solve this problem.
It is due to the low memory space of your device and the inefficient memory management.
Select Product --> Analyse for checking memory leaks.
Hope this may help you

SQLite iOS error [closed]

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Im am using SQLite with my iOS app. I am storing a few strings. Here is my query:
CustomTableView[312:26534] INSERT INTO Game (name, developer, iconPath)
VALUES ("2048", "ketchapp","/var/mobile/Containers/Data/Application/9778669B-D84B-
4D15-932E-DEB741FC8093/Documents/cached.png") WHERE id = 1
It is throwing this error:
2014-11-18 19:49:36.220 CustomTableView[312:26534] near "WHERE": syntax error
What is wrong?
There is no WHERE clause on INSERT. http://www.sqlite.org/lang_insert.html
You probably meant to do UPDATE. http://www.sqlite.org/lang_update.html

NSSet setByAddingObject: object cannot be nil [closed]

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I am new to Xcode. I have a series of sports apps that are designed to easily switch out the data for different teams. The data is in html. To create an app for a new team, I duplicate the parent app, rename it, and switch out the data files. The new app crashes when I press a button. I get the following response:
Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: ' -[NSSet setByAddingObject:]: object cannot be nil'*
When I run an Exception Breakpoint, it leads me to this line:
removable = [removable setByAddingObject:oteam];
I am confused because this line of code is not an issue in the parent app at all. The 2 apps' code looks identical, but the offspring app crashes. Any ideas?
The error message indicates that oteam is nil.
Objective-C collections
(arrays, dictionaries, sets) cannot hold nil elements, therefore
[removable setByAddingObject:oteam];
crashes if oteam == nil.

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