First, my advice is to watch CppCon 2015: Stephan T. Lavavej “functional: What’s New, And Proper Usage”. std::binary_function is mentioned on slide 36, at around 36 mins in the video. You can find the slides at github.com/CppCon/CppCon2015). It doesn’t go into detail why you shouldn’t use std::binary_function, but if you’re using something that’s been deprecated … Read more
I followed the guide here: https://flutter.dev/docs/release/breaking-changes/buttons. _buttonPreview(double _height, double _width) { final ButtonStyle flatButtonStyle = TextButton.styleFrom( minimumSize: Size(_width, _height), backgroundColor: Colors.grey, padding: EdgeInsets.all(0), ); return TextButton( style: flatButtonStyle, onPressed: () {}, child: Text( “some text”, style: TextStyle(color: Colors.white), ), ); }
Follow the below example to fix this warning: Supporting examples for Swift 3, 4 and 5. let testStr = “Test Teja” let finalStr = testStr.substring(to: index) // Swift 3 let finalStr = String(testStr[..<index]) // Swift 4 let finalStr = testStr.substring(from: index) // Swift 3 let finalStr = String(testStr[index…]) // Swift 4 //Swift 3 let finalStr … Read more
Create a new schema, with a new namespace. Call this “version 2”. If you choose to support version 1 XSD and version 2 XSD in your application that’s fine, but keep them seperate and don’t try to layer the two on top of each other – especially if you’re going try to stop people from … Read more
As stated in P0174: The is_literal type trait offers negligible value to generic code, as what is really needed is the ability to know that a specific construction would produce constant initialization. The core term of a literal type having at least one constexpr constructor is too weak to be used meaningfully. Basically, what it’s … Read more
Observations: #include <cstring> should introduce std::strcpy(). using namespace std; (as written in medico.h) introduces any identifiers from std:: into the global namespace. Aside from using namespace std; being somewhat clumsy once the application grows larger (as it introduces one hell of a lot of identifiers into the global namespace), and that you should never use … Read more
What problems did loop solve? Why would one have used it in the first place? Prior to Python 3.6, asyncio.get_event_loop() was not guaranteed to return the event loop currently running when called from an asyncio coroutine or callback. It would return whatever event loop was previously set using set_event_loop(some_loop), or the one automatically created by … Read more
It is really easy to accidentally use a no-arg case class incorrectly as a pattern. scala> case class Foo warning: there were deprecation warnings; re-run with -deprecation for details defined class Foo scala> (new Foo: Any) match { case Foo => true; case _ => false } res10: Boolean = false Instead of: scala> (new … Read more