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ViewController respondsToSelector: message sent to deallocated instance (CRASH)
...ler release];
viewController = NULL;
The problem is that release doesn't set the variable to NULL.
That means that setting it to NULL calls release again, decrementing the refcount and freeing the memory immediately until later when the variables that reference viewController are finished with it...
PopupWindow - Dismiss when clicked outside
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Please try to set setBackgroundDrawable on PopupWindow that should close the window if you touch outside of it.
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Adding placeholder text to textbox
...Type TextBox}" BasedOn="{StaticResource {x:Type TextBox}}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type TextBox}">
<Grid>
<TextBox Text="{Binding Path=Te...
How to stop /#/ in browser with react-router?
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For the versions 1, 2 and 3 of react-router, the correct way to set the route to URL mapping scheme is by passing a history implementation into the history parameter of <Router>. From the histories documentation:
In a nutshell, a history knows how to listen to the browser's addr...
How to scale a UIImageView proportionally?
...ke sure it would work as needed, but I don't remember the variable name to set. So I Google it and found this answer.
– Dino Tw
Feb 20 '14 at 17:38
1
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How to delete a workspace in Eclipse?
...irectory. This will delete all the projects but also the Eclipse cache and settings for the workspace. These are kept in the .metadata folder of an Eclipse workspace. Note that you can configure Eclipse to use project folders that are outside the workspace folder as well, so you may want to verify t...
What's the difference between deadlock and livelock?
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APPENDIX A - TOPICS IN CONCURRENCY
Deadlock Example
If both processes set their flags to true before either has executed the while statement, then each will think that the other has entered its critical section, causing deadlock.
/* PROCESS 0 */
flag[0] = true; // <- get lock 0
w...
How to execute XPath one-liners from shell?
Is there a package out there, for Ubuntu and/or CentOS, that has a command-line tool that can execute an XPath one-liner like foo //element@attribute filename.xml or foo //element@attribute < filename.xml and return the results line by line?
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How to find a deleted file in the project commit history?
Once upon a time, there was a file in my project that I would now like to be able to get.
9 Answers
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What is a thread exit code?
...e tends to mean it didn't exit as expected. But then this exit code can be set in code by yourself to completely overlook this.
The closest link I could find to be useful for more information is this
Quote from above link:
What ever the method of exiting, the integer that you return from your ...