move

问题 I'm having a lot of fun trying to solve the robot simulator Exercism exercise, but I'm facing a value moving problem for which I don't seem to be able to come up with an elegant solution: impl Robot { pub fn new(x: isize, y: isize, d: Direction) -> Self { Robot { position: Coordinate { x: x, y: y }, direction: d } } pub fn turn_right(mut self) -> Self { match self.direction { // ... }; self } pub fn turn_left(mut self) -> Self { match self.direction { // ... }; self } pub fn advance(mut self)

问题 I was trying to understand what the rule of zero says by reading this blog. IMO, it says if you declare your own destructor then don't forget to make the move constructor and move assignment as default. Example: class Widget { public: ~Widget(); // temporary destructor ... // no copy or move functions }; "The addition of the destructor has the side effect of disabling generation of the move functions, but because Widget is copyable, all the code that used to generate moves will now generate

问题 Path of source file is : /public_html/upload/64/SomeMusic.mp3 And I want to move it to this path : /public_html/archive/2011/05/64/SomeMusic.mp3 How can i do this using FTP commands? 回答1: In FTP client: rename /public_html/upload/64/SomeMusic.mp3 /public_html/archive/2011/05/64/SomeMusic.mp3 With FTP commands: RNFR /public_html/upload/64/SomeMusic.mp3 RNTO /public_html/archive/2011/05/64/SomeMusic.mp3 source: http://www.nsftools.com/tips/RawFTP.htm 回答2: Just in case someone else will search

问题 I'm currently fiddling around with Android programming, but I have a small problem detecting different touch events, namely a normal touch press (press on the screen and release right away), a long press (touch the screen and hold the finger on it) and movement (dragging on the screen). What I wanted to do is have an image (of a circle) on my screen which I can drag around. Then when I press it once (short/normal press) a Toast comes up with some basic information about it. When I long press

问题 This question already has answers here : C++11 rvalues and move semantics confusion (return statement) (6 answers) Closed 2 years ago . I don't understand when I should use std::move and when I should let the compiler optimize... for example: using SerialBuffer = vector< unsigned char >; // let compiler optimize it SerialBuffer read( size_t size ) const { SerialBuffer buffer( size ); read( begin( buffer ), end( buffer ) ); // Return Value Optimization return buffer; } // explicit move

问题 it seems the old indexes are retained when moving items in an collection, how can I enasure that the items will be iterated in the new order with the new index after an move? First I move items in an ordinary List: elements.Remove(src); int index = elements.IndexOf(target); elements.Insert(index,src); and then run an foreach loop foreach(Element _element in elements){ /* enter code here*/ } and it will retain the items with in order they were before relocation. 回答1: I have tested your problem

问题 I have a background image on my 2D game, and I would like to know how I could move this image around with keys? I was trying things like: background.getX() + 3; But that wouldn't work as getX() isn't applicable for BufferedImages. How can I do this? 回答1: You're going to need two things. You're going to need to know the position of the image. A simple Point object should suffice. This tells you where to draw the image... Some where to catch key board events. For this I would suggest the key

问题 I'm trying to find a script to find and move files to a different folder. I've got a folder with hundreds pictures like this: PA-600-01.jpg, PA-600-02.jpg, PA-600-03.jpg, PA-600-04.jpg, PA-601-01.jpg, PA-601-02.jpg, PA-601-03.jpg, PA-602-01.jpg, PA-602-02.jpg, PA-602-03.jpg, PA-602-04.jpg, PA-602-05.jpg I want to move all the pictures with PA-600 ( so PA-600-01.jpg, PA-600-02.jpg, PA-600-03.jpg and PA-600-04.jpg ) on a folder (new or already existing, the easier...) named PA-600 , move all

问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 5 years ago . Before I asked a question how to move videos from one div to another. Now, I have another problem. I want to "attach" an image on each video (actually, I would like to have an image in front of each video) and make it moving together with video. Instead of pasting my code here, I made a working

问题 How do you move an control (for example a ImageView) in a certain direcion in degrees. There is no coordinate where the control needs to stop moving. we want to move it in a direction in degrees (0-360) This doesn't work: RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT); params.setMargins(100,75, 0,0); params.topMargin= 100; 回答1: Found the solution, this is it: Sinus was the solution...