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NSNotificationCenter addObserver in Swift
...erit from an Objective-C object, you must prefix your method with @objc in order to use it as a selector.
@objc private func batteryLevelChanged(notification: NSNotification){
//do stuff using the userInfo property of the notification object
}
See NSNotificationCenter Class Reference, In...
In c++ what does a tilde “~” before a function name signify?
...omatically be destructed when appropriate. Beware of Static Initialization Order Fiasco
– sehe
Oct 15 '12 at 7:01
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How to reposition Chrome Developer Tools
... You could clarify that you have to click AND HOLD this button in order to dock to the right. As @PaulSpencer noticed, simply clicking only undocks.
– 0x89
Nov 16 '12 at 13:38
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maximum value of int
Is there any code to find the maximum value of integer (accordingly to the compiler) in C/C++ like Integer.MaxValue function in java?
...
How can I check if a background image is loaded?
I want to set a background image on the body tag, then run some code - like this:
10 Answers
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How can I extract embedded fonts from a PDF as valid font files?
...o follow a few specific steps which are not necessarily straightforward in order to save the extracted font data as a file which is re-usable.
Using mupdf
Next, MuPDF. This application comes with a utility called pdfextract (on Windows: pdfextract.exe) which can extract fonts and images from PDFs. ...
Apply pandas function to column to create multiple new columns?
... updating the row directly like this ended up being surprisingly slow - an order of magnitude slower than the apply with 'expand' + pd.concat solutions
– Dmytro Bugayev
Jun 30 at 17:33
...
Node.js throws “btoa is not defined” error
...rs (i.e. if you plan to exchange base64 between Node.js and a browser). In order to make it work you have to mark the input text as 'binary'.
Buffer.from('Hélló wórld!!', 'binary').toString('base64')
This gives you SOlsbPMgd/NybGQhIQ==. If you make atob('SOlsbPMgd/NybGQhIQ==') in a browser it...