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Why do I get a “Null value was assigned to a property of primitive type setter of” error message whe
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According to this SO thread, the solution is to use the non-primitive wrapper types; e.g., Integer instead of int.
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Develop Android app using C#
...ww.dot42.com/
dot42 provides a free community licence as well as a professional licence for $399.
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How to get rid of the 'undeclared selector' warning
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Another option would be to disable the warning with:
#pragma GCC diagnostic ignored "-Wundeclared-selector"
You can place this line in the .m file where the warning occurs.
Update:
It works also with LLVM like this:
#pragma clang ...
Checking if object is empty, works with ng-show but not from controller?
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And in your $http callbacks, you do the following:
$http.get(..., function(data) {
$scope.items = {
data: data,
// other stuff
};
});
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What do two question marks together mean in C#?
...See also ?? Operator - MSDN.
FormsAuth = formsAuth ?? new FormsAuthenticationWrapper();
expands to:
FormsAuth = formsAuth != null ? formsAuth : new FormsAuthenticationWrapper();
which further expands to:
if(formsAuth != null)
FormsAuth = formsAuth;
else
FormsAuth = new FormsAuthentica...
Getting the current page
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This may have problems when dealing with rotation.
– Jason McCreary
Nov 18 '13 at 19:34
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Getting the Value of a UITextField as keystrokes are entered?
...s out, the easiest way to do this is using Interface Builder:
Add a IBAction (to the ViewController, say, as in this case)
Ctrl-Click (or right click) on the UITextField in Interface Builder
Connect the "Editing Changed" event to the File's Owner's IBAction added in the first step.
Works like a ...
C# delete a folder and all files and folders within that folder
...using the code below and I get the error Folder is not empty , any suggestions on what I can do?
10 Answers
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get string value from UISegmentedControl
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@IBAction func segmentedControlAction(sender: AnyObject) {
if(segementControl.selectedSegmentIndex == 0)
{
print(segementControl.titleForSegmentAtIndex(0))
}
else if(segementControl.selectedSegmentIndex == ...
“Collection was mutated while being enumerated” on executeFetchRequest
...e tells that each thread needs to have its own moc, you have to take it seriously : each moc must be instantiated in the thread that will be using it !
Moving the following lines...
// We instantiate the background moc
self.backgroundMOC = [[[NSManagedObjectContext alloc] init] autorelease];
[se...