undo | 易学教程

Undo directory move git bash

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问题 I was trying to move a file from my Downloads folder to my repository and I ended up moving the Downloads folder. this is the command i used mv ~/Downloads lesson_3_reflecton_prompts.txt is there a way I can undo this? 来源： https://stackoverflow.com/questions/48329352/undo-directory-move-git-bash

Undo behavior on textField value based on value verification after focus lost

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问题 I post new question based on this previously code posted here (Filter users values on TextField input after a BindDirectional strategy betwen a Slider and min/max TextField) My goal is simple, what is the best way to undo wrong TextField value (based on custom verification) after user lost the focus event on my value. Only way is to access the oldValue before user overwrite with another focus event ? Actually i have this simple code : val myTextField = new TextField () def parseDouble(s:

How to get RichTextBox Undo to work better?

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问题 I am trying to write a text editor using RichTextBox . My concern is now about Undo and possibly Redo features of RichTextBox. When I start writing in text box, say 1 minute! if I call Undo method, all it does is just I beleive clearing or resetting richtextbox again. How can I get it to work that it can do better, like Undoing last added word, or last added new line...I mean usual things you expect from Undo function. (The same counts for Redo also!) Is there properties or some options to

Adding undo function to drawing app

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问题 I followed a raywenderlich tutorial on using the UIKit to make a drawing app. I'm now trying to add in the functionality to undo the last stroke. Ideally I would like to undo up to 10ish strokes. I'm trying to figure out what is the best way to go about doing this. I was thinking of creating another ImageView which has only the last stroke and making the ImageView.image = nil when the user presses back. In the code from the tutorial there's something similar to this. When the touches end, the

VIM - How to I make Undo put me back in what ever mode I was on previously?

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问题 I often go around editing things in normal mode only to realise my change was not intended, as such, I undo and then press K/L/J/H to continue but meanwhile I am already in insert mode, so I have to get out of it first. I would like to insert a rule on my .vimrc to put me back on the mode I was on just before any changes that I did. IE: shift+s (delete line and start editing) -> undo : Back in normal mode Bonus: ciw -> asdahsdasdh -> undo: Back in normal mode PS: I am actually using Undo with

Html text input undo not working

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问题 I'm having a problem where the undo function (both ctrl+z and right click > undo) of html text boxes and text areas is being disabled. This is happening on pages generated from ASP.NET, and which incorporate a lot of Silverlight, JavaScript, JQuery and Ajax. It happens about 90% of the time, 10% of the time the undo works OK. It only happens when viewing the page in IE (8 + 9), it works fine in Chrome, Opera and Firefox. It's not really practical for me to post the code on here, as there is

FirstResponder missing redo:

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问题 Why my FirstResponder in InterfaceBuilder's file is missing redo: connection (in Received Actions list)? undo: exists, but redo: doesn't. How could I fix it? 回答1: This is a bug. The workaround is to throw this in a file somewhere: @interface NSResponder (Redo) - (IBAction)redo:(id)sender; @end Then make your connection in Interface Builder. Once that is done you can delete this code. 回答2: This is a bug in Xcode, it doesn't see the redo: action even though it is there. As a workaround you can

Intellij IDEA Cannot Undo

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问题 I am working on a project at Intellij IDEA. I moved refactored some packages. However I want to undo my changes. When I click revert button it says Cannot Undo and shows a list under that: Following files affected by this action have been already changed How can I revert my changes because I lost some packages and classes. Does Intellij IDEA keeps them inside a temporary folder? PS: I use open jdk 1.6.0 on a 64 bit Ubuntu computer. 回答1: IntelliJ IDEA has a great feature called as local

Oracle有哪些诊断事件

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作者： eygle | 【转载请注出处】链接： https://www.eygle.com/archives/2004/12/oracle_diagnostics_events_list.html 经常有人问，Oracle有哪些诊断事件，各是什么含义，怎样使用？这些问题问得太多太多，Oracle没有过多的说明，实际上也不需要太多的说明。我们可以通过以下代码查询得到Oracle的诊断事件及说明，通过这些，我想就足够了。列举在这里给自己参考。 1.代码 SET linesize 120 SET feedback off SET SERVEROUTPUT ON DECLARE err_msg VARCHAR2(120); BEGIN dbms_output.enable (1000000); FOR err_num IN 10000..10999 LOOP err_msg := SQLERRM (-err_num); IF err_msg NOT LIKE '%Message '||err_num||' not found%' THEN dbms_output.put_line (err_msg); END IF; END LOOP; END; 2.列表 ORA-10000: controlfile debug event, name 'control_file' ORA

OpenGL ES Simple Undo Last Drawing

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问题 I am trying to figure out how to implement a simple "undo" of last drawing action on the iPhone screen. I draw by first preparing the frame buffer: [EAGLContext setCurrentContext:context]; glBindFramebufferOES(GL_FRAMEBUFFER_OES, viewFramebuffer); I then prepare the vertex array and draw this way: glVertexPointer(2, GL_FLOAT, 0, vertexBuffer); glDrawArrays(GL_POINTS, 0, vertexCount); glBindRenderbufferOES(GL_RENDERBUFFER_OES, viewRenderbuffer); [context presentRenderbuffer:GL_RENDERBUFFER_OES