undo | 易学教程

Using Vim's persistent undo?

阅读更多关于 Using Vim's persistent undo?

问题 One of the new features in Vim 7.3 is 'persistent undo', which allows for the undotree to be saved to a file when exiting a buffer. Unfortunately, I haven't quite been able to get it properly enabled, or I must be using it wrong. Here's what I've tried so far: I added the following to ~/.vimrc set undofile " Save undos after file closes set undodir=$HOME/.vim/undo " where to save undo histories set undolevels=1000 " How many undos set undoreload=10000 " number of lines to save for undo After

Git pull into wrong branch

阅读更多关于 Git pull into wrong branch

问题 Myself and one other developer had been merging and pushing our work to a non-master branch called toolwork. That way, we didn't impact the rest of the team. My topic branch was called DPM-93 and my git workflow was this. # do some work git checkout DPM-93 git commit -m "did some work" # catch up git checkout toolwork git pull origin toolwork # rebase my topic branch git checkout DPM-93 git rebase toolwork # merge and push my changes git checkout toolwork git merge --no-ff DPM-93 git push

Undo an accidental hg strip?

阅读更多关于 Undo an accidental hg strip?

I have accidentally run hg strip, and deleted a stack of commits. I have not done anything in the repo since. Is there a way for me to bring back this stack of commits, to undo the hg strip I just ran? As long as you didn't run the strip with the --no-backup option, the stripped changesets can be found in the repository under .hg\strip-backup . If you sort the directory content by date the latest one is likely the one you need to restore. Restore it with hg unbundle <filename> . Here is a worked example from an external post . I've cleaned it up slightly to make it a little more general:

How is VIM's undo tree used?

阅读更多关于 How is VIM's undo tree used?

问题 This answer says: Vim's undo/redo system is unbeatable. Type something, undo, type something else, and you can still get back the first thing you typed because Vim uses an undo tree rather than a stack. In almost every other program, the history of the first thing you typed is lost in this circumstance. This is the first I hear of this. How can I backtrack along the tree? 回答1: See also :h undo-redo , which lists all the commands and their usage. There are two ways to traverse the undo tree.

How do I make a DataGridView immediately commit edits?

阅读更多关于 How do I make a DataGridView immediately commit edits?

I have a master-detail layout with a section of popup menus (the Details) and a section with a DataGridView which holds the rows. The popup-menu state is updated when the selected row in the DataGridView changes and the state in the DGV's selected row should update when the popup-menu changes. All of this works except the row in the DataGridView doesn't immediately update when I change the value of the popup-menu. I have to select a different row in order to see my edits. I'm assuming this is because the edit hasn't been committed until the selection changes. My question is: How do I make the

What are the differences between 'revert', 'amend,' 'rollback', and 'undo' a commit?

阅读更多关于 What are the differences between 'revert', 'amend,' 'rollback', and 'undo' a commit?

Although I use Git pretty often, I'm still a beginner. Sometimes, I make a mistake but spot it only after I have committed it. At that point, I usually have to spend a long time on the Internet looking for the command I should use to get rid of it (before pushing). Every time that happens, I find myself wondering what's the difference between the four terms that I usually come across: revert, amend, rollback, undo. I've that it's finally time to learn those differences once and for all. What are they? jub0bs The terms revert and amend have a well defined meaning in Git. In contrast, rollback

重新学习MySQL数据库10：MySQL里的那些日志们

阅读更多关于重新学习MySQL数据库10：MySQL里的那些日志们

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/a724888/article/details/79160674 同大多数关系型数据库一样，日志文件是MySQL数据库的重要组成部分。MySQL有几种不同的日志文件，通常包括错误日志文件，二进制日志，通用日志，慢查询日志，等等。这些日志可以帮助我们定位mysqld内部发生的事件，数据库性能故障，记录数据的变更历史，用户恢复数据库等等。本文主要描述错误日志文件。微信公众号【黄小斜】大厂程序员，互联网行业新知，终身学习践行者。关注后回复「Java」、「Python」、「C++」、「大数据」、「机器学习」、「算法」、「AI」、「Android」、「前端」、「iOS」、「考研」、「BAT」、「校招」、「笔试」、「面试」、「面经」、「计算机基础」、「LeetCode」等关键字可以获取对应的免费学习资料。 MySQL日志文件系统的组成 a、错误日志：记录启动、运行或停止mysqld时出现的问题。 b、通用日志：记录建立的客户端连接和执行的语句。 c、更新日志：记录更改数据的语句。该日志在MySQL 5.1中已不再使用。 d、二进制日志：记录所有更改数据的语句。还用于复制。 e、慢查询日志：记录所有执行时间超过long_query_time秒的所有查询或不使用索引的查询。 f

“[NSBigMutableString substringWithRange:]: Range {0, 10} out of bounds; string length 9” error with Undo

阅读更多关于 “[NSBigMutableString substringWithRange:]: Range {0, 10} out of bounds; string length 9” error with Undo

问题 My app crashes when I try to do undo on UISearchBar . In my app I have code to prevent entering a '%' sign on the search bar and for doing this it replaces a % to @"" in textDidChange method as below: - (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText { self.searchBar.text = [searchText stringByReplacingOccurrencesOfString:@"%" withString:@""]; } So if I type text "abc%xyz", the final text visible on search bar would be 'abcxyz'. No when I click undo, I see 'xyz'

In Chrome undo does not work properly for input element after contents changed programmatically

阅读更多关于 In Chrome undo does not work properly for input element after contents changed programmatically

问题 In Chrome, I noticed that undo does not work properly for input element after the contents of the element has been changed programmatically. Although I get different behaviours for different browsers, they're not as bad as Chrome. FF20 good IE9 some support (undo stack cleared when input loses focus) Safari5 some support (undo stack cleared when input loses focus) Chrome26 unreliable For example, a script that trims spaces (see also jsfiddle below) type some spaces before "hello!", click

Undo delete in GIT

阅读更多关于 Undo delete in GIT

I made something very stupid. I made a commit using git commit (file edits + new files) (C). Then I made amend last commit. Then I deleted all files recursively (!) using git rm -r Then I made another git commit (C). A-B-C ↑ master Is there any way to undelete the files but keep the changes I had in my first commit? (C) I'd rather do not go back to (B). I tried git reset --soft head^, so then the git status lists files I deleted, then I did git checkout, but still no luck. I don't even know if it's possible. manojlds Do yourself a favour and do not do git checkout <hash> like the other answer