universal

I was reading the RFC on "expanding" impl Trait when I came upon the following: By contrast, a programmer who first learned: fn take_iter(t: impl Iterator) and then tried: fn give_iter() -> impl Iterator would be successful, without any rigorous understanding that they just transitioned from a universal to an existential. While I understand universal vs existential from a logic perspective, what makes the first one above universal and the second one existential? Shepmaster The RFC defines the terms multiple times in multiple manners: between existential types (where the callee chooses the type

I am developing UWP Win10 VS2015 App, and using VisualStates in ListviewItem Styles ... I have animations/storyboard in the FocusStates and it works fine, but the problem is when we click outside the Listview so we Lost the Focus and then the animation ended. Actually I need to start the animation on Selected visualState and end the animation on Unselected visualstate. The animation is working fine but only on PointerOver, PointerPressed, PointerFocused, Unfocused etc but I need it on Selected and Unselected visualstates. When I click on ListviewItem the Colorband Expand to the Right and when

I want to create a universal apps. I have already done some apps for iPhone. Now i want to start a universal apps which means the app should be runs in iPhone and iPad. I don't have any idea about that. So please guide me and give me some sample links for that. Thanks! It's easier than you'd think. If UI is your only difference, you just need to have different XIBs for each platform. Then you configure in plist files, which XIB you'd load on each platform. This link helped me a lot http://www.weston-fl.com/blog/?p=563 来源： https://stackoverflow.com/questions/3845478/how-to-create-universal-apps

Im having trouble figuring out how to load a separate XIB for iPad or for iPhone in a Universal app. Its easy enough to convert the Xcode project to Universal and have separate Main view interfaces. My problem is the secondary view and getting it to have separate interfaces for both iPad and iPhone. Please offer any help you can give as I have been working on this issue for days without success. Thanks in advance! Kenny Wyland I know that @indragie's answer is a very common one, but it's a common misunderstanding that will cause you a lot more work than you actually need to do. As long as you

I'm doing some past exam papers for practice for my exam, and I've come across a question that I'm not quite sure how to tackle: I know I've got to use the "univ" function to break up the term into a list, and then recurse through that list and check if any of the elements in the list equal the term we want to replace. However, I'm a bit lost with double recursing when the list contains another complex term that we have to break down further. My attempt so far is as follows: complexTerm(X) :- nonvar(X), functor(X, _, A), A > 0. replace(Term, Subterm, Subterm1, Term1) :- Term =.. [H|T],

I just made some research about those (quite) new features and I wonder why C++ Committee decided to introduce the same syntax for both of them? It seems that developers unnecessary have to waste some time to understand how it works, and one solution lets to think about further problems. In my case it started from problem which can be simplified to this: #include <iostream> template <typename T> void f(T& a) { std::cout << "f(T& a) for lvalues\n"; } template <typename T> void f(T&& a) { std::cout << "f(T&& a) for rvalues\n"; } int main() { int a; f(a); f(int()); return 0; } I compiled it