copy

问题 I am attempting to modify the DragImage demo from the wxPython examples so that instead of just moving the image around, dragging an image produces a new copy which is draggable, while the original "source" image remains. A decent analogy is that the original images are like a set of widgets to choose from; clicking and dragging on any one of those produces a widget for you to place wherever (and this can be done multiple times) while the source widget remains. import os import glob import wx

问题 I have one NSTableView, Which displays just the row of numbers. I just want to copy those numbers using (cmd+copy) or right click copy. How can I achieve this feature in NSTableViews. 回答1: By default, the edit menu (cut/copy/paste/etc) is auto-enabled, provided the text in your tableView row is selectable or editable, and the text field in question is in the responder chain. The auto-enabled menu items work by looking at the responder chain. If the 1st responder responds to the selector that

问题 I have a Silverlight 3.0 applications with some custom graphics and some charts. I need to find the best way to transfer these graphics to a PowerPoint presentation. I've read that Silverlight 4.0 offers a Clipboard API, but there is only support for Unicode-text, not images. Is there a way to achieve this task without forcing users to manually PrtSc and than paste to other applicatons? 回答1: There's no simple way to do this in SL3. My recommendation would be to use a WriteableBitmap and save

问题 For my programming assignment, I was asked to write a generic copy method to copy from one array to an identically sized and typed array. Is this even possible in Java? Everything I tried ended up with some "generic array creation" error. I am lost and don't know how to solve this problem! public class copyArray<AnyType>{ public copyArray(AnyType[] original){ AnyType[] newarray = new AnyType[original.length]; for(int i =0; i<original.length; i++){ newarray[i] = original[i]; } } 回答1: You can

问题 I am copying column1, column2 from table2 but want to insert value of column3 in table1 manually... what should i do? Please help INSERT INTO table1( column1, column2, column3) SELECT column1, column2 FROM table2 WHERE `id` = '1' 回答1: like INSERT INTO table1( column1, column2, column3) SELECT column1, column2, 'My String' as column3 FROM table2 WHERE `id` = '1' 来源： https://stackoverflow.com/questions/23971078/copy-one-row-from-a-table-to-another-and-insert-value-of-one-column-in-same-quer

问题 I want to copy below files from one location to another. After copy file I want to add something in file name. From C:\Users\Niki\Desktop*.csv To C:\Users\Niki\reports\Final_*.csv How would I do that? I am using below command for this: copy /-y "C:\Users\Niki\Desktop\*.csv" "%TargetFolder%" 回答1: Here's a batch file that should work: @echo off set "targetfolder=d:\backup" for %%a in ("C:\Users\Niki\Desktop\*.csv") do ( copy /-y "%%a" "%TargetFolder%\Final_%%~nxa" ) 回答2: for %%x in ("C:\Users

问题 I've been using Qi and Karma to do some processing on several small languages. Most of the grammars are pretty small (20-40 rules). I've been able to use autorules almost exclusively, so my parse trees consist entirely of variants, structs, and std::vectors. This setup works great for the common case: 1) parse something (Qi), 2) make minor manipulations to the parse tree (visitor), and 3) output something (Karma). However, I'm concerned about what will happen if I want to make complex

问题 I've noticed that when you copy a range in excel (copy as a picture - as shown on screen) and paste it into PowerPoint, the resulting image is not scaled 100% to the original image (right click on image, go to format settings and go to size to see scale info). In addition, this scaling differs on different computers (might be related to graphics card). If you have different versions of Office the scaling also differs per computer (i.e. in Office 03, scaling is 100% of original, in Office 07,

问题 Is python's copy module thread safe? If not, how should I copy\deepcopy mutable objects in a thread-safe manner in python? 回答1: Python's GIL protects bytecodes, not Python statements (see short or long explanations). As both copy.copy() and copy.deepcopy() are implemented in python, they are certainly more than a single bytecode, so no, they are not thread safe! If you must work with multiple threads, and there are many cases you should such as having IO dedicated threads, do what must be

问题 I was browsing this question and some similar ones: Getting a sub-array from an existing array Many places I read answers like this: Getting a sub-array from an existing array What I am wondering is why Skip and Take are not constant time operations for arrays? In turn, if they were constant time operations, won't the Skip and Take method (without calling ToArray() at the end) have the same running time without the overhead of doing an Array.Copy, but also more space efficient? 回答1: You have