composite

问题 I am trying to create a program with three buttons and a label with a CompositeIcon that at the start is empty. When you click one of the buttons there will be added a square at the screen (with the described color), when another button is pressed there is gonna be added another square and so on. That means, when i press a button five times, there will be created five squres at the given colors. If any one will read my code i will be thankful. /* This program creates a window with three

问题 I've been staring at this code for quite some time now and I can't get my head around that error message. divisors :: Integer -> [Integer] divisors n = [t | t <- [1..n], mod n t == 0] length' :: [a] -> Integer length' [] = 0 length' (x:xs) = 1 + length' xs divLengths :: [(Integer, Integer)] divLengths = [(n, length' (divisors n)) | n <- [1..]] divLengths' :: [Integer] divLengths' = [length' (divisors n) | n <- [1..]] hcn :: [Integer] hcn = [n | n <- [1..], max (take n divLengths') == length'

问题 I have a Postgresql function which returns a composite type defined as (location TEXT, id INT). When I run "SELECT myfunc()", My output is a single column of type text, formatted as: ("locationdata", myid) This is pretty awful. Is there a way to select my composite so that I get 2 columns back - a TEXT column, and an INT column? 回答1: Use: SELECT * FROM myfunc() You can read more about the functionality in this article. 回答2: Answer has already been accepted, but I thought I'd throw this in: It

问题 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 6 years ago . I have a Composite called Workspace. In this composite I want to add some graphics object. Each object can be selected, dragged, moved and can have complicated shape (circle, ellipse, polygon,...). I can click at

问题 I have 3 class, Root, CFile, SubDirectory. Root is a abstract class. CFile and SubDirectory are derived from Root. CFile has attributes: name:string , size:int, level:int. SubDirectory has attributes: name:string, size:int, level:int,a vector, which contains both files and directories and a function void add() to push the file or directory into the vector. If a file in a directory, file's level is higher than the directory's by one. All setters and getters are defined. Now, I have a file

问题 I need to combine two series of images (both the same resolution, saved as JPG files) into a single JPG file with the images side by side to each other. I have tried doing this with Photoshop CS6 actions but to no avail... I have searched the internet for possible solutions but as it turns out programming knowledge is required to write a script to perform such a function. I would like to have any help possible with the following: My file names are as such: Series one: bone00001.jpg, bone00002

问题 I'm finding it difficult to create a composite foreign key. I would like a session table that has both 'movieid' and 'cinemaid' as a composite foreign key. This is because one session would require both the movie and the cinema location. My current schema is the folllowing: Schema::create('session', function (Blueprint $table) { $table->increments('id'); $table->integer('movieId'); $table->integer('cinemaId'); $table->foreign(array('movieId', 'cinemaId'))->references(array('id', 'id'))->on

问题 When i press a button in my swt program, a new composite should be drawn. But the composite only displays if i resize the window. I have a composite ( compLoad ) in my gui which is assigned a new composite compHELP comHelp_ = new compHELP(compLoad, SWT.RESIZE); i have tried redraw() but nothing happens 回答1: The composite needs to be re-layouted when adding/removing controls , see Composite.layout() // uses Composite.layout(true) Composite.layout(boolean changed) Composite.layout(boolean

问题 I'm trying a simple experiment with ResizableComposite by logging width & height of the widget, but I'm not getting any response. ResizableFlowPanel public class ResizableFlowPanel extends FlowPanel implements RequiresResize, ProvidesResize { public ResizableFlowPanel() { super(); } @Override public void onResize() { GWT.log(this.getOffsetHeight() +","+this.getOffsetWidth()); } } AppBody.java public class AppBody extends ResizeComposite implements RequiresResize, ProvidesResize { private

问题 tl;dr: How do I compel Linux to reject high-speed USB connections so that it defaults to full speed? Full explanation: I'm writing a USB gadget driver based on Linux gadget zero. The hardware I'm testing on has high speed capable USB which won't be the case of the actual product. For some reason, the gadget (although it has no high speed descriptors on any configuration) is being reported as a high speed gadget ( struct usb_gadget->speed==USB_SPEED_HIGH on set_config function of composite