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Checking if an instance's class implements an interface?
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As therefromhere points out, you can use class_implements(). Just as with Reflection, this allows you to specify the class name as a string and doesn't require an instance of the class:
interface IInterface
{
}
class TheClass implements IInterface
{
}
$interfaces = cl...
Should I declare Jackson's ObjectMapper as a static field?
...hey are fully immutable, thread-safe, meaning that it is not even theoretically possible to cause thread-safety issues (which can occur with ObjectMapper if code tries to re-configure instance).
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Input text dialog Android
...et it as the view of the AlertDialog. You can customize the type of input allowed using setInputType, if you need.
If you're able to use a member variable, you can simply set the variable to the value of the EditText, and it will persist after the dialog has dismissed. If you can't use a member v...
How do I update/upsert a document in Mongoose?
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Mongoose now supports this natively with findOneAndUpdate (calls MongoDB findAndModify).
The upsert = true option creates the object if it doesn't exist. defaults to false.
var query = {'username': req.user.username};
req.newData.username = req.user.username;
MyModel.findOneAndUpd...
Label encoding across multiple columns in scikit-learn
...mn; I'd rather just have one big LabelEncoder objects that works across all my columns of data.
21 Answers
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How to add spacing between UITableViewCell
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Nice solution. In case anyone has issues, I had to call super.layoutSubviews() first to ensure the entire view was properly laid out prior to setting its frame.
– ruttopia
Dec 14 '16 at 21:51
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Python, Unicode, and the Windows console
...at's the best way around this? Is there any way I can make Python automatically print a ? instead of failing in this situation?
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What are the rules for calling the superclass constructor?
What are the C++ rules for calling the superclass constructor from a subclass one?
10 Answers
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viewWillDisappear: Determine whether view controller is being popped or is showing a sub-view contro
...trollers property) has been updated by the time that viewWillDisappear is called.
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How to disable back swipe gesture in UINavigationController on iOS 7
...ewDidDisappear, but works in method viewWillDisappear. On iOS7 it works in all of above mentioned methods. So try to use it in any other methods while working on the viewController, I confirm it works for me on iOS8 when I click on some button inside of the view.
– Sihad Begovi...