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Is there a MySQL option/feature to track history of changes to records?
...in a MySQL database. So when a field has been changed, the old vs new is available and the date this took place. Is there a feature or common technique to do this?
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为AppInventor2开发拓展(Extension) · App Inventor 2 中文网
... 各版本对比 App上架指南 入门必读 IoT专题 AI2拓展 Aia Store 关于 关于我们 发布日志 服务条款 搜索 ...
App Inventor 2 TaifunImage 拓展，图像高级处理功能，剪裁，压缩，翻转等 ...
... 教育 入门必读 中文教程 IoT专题 AI2拓展 ChatGPT接入 Aia Store 开通VIP 搜索 App Inventor 2 TaifunImage 拓展，图...
How to iterate object in JavaScript? [duplicate]
...nary.data and just iterate over dictionary
– brendon-ai
Nov 9 '17 at 1:29
1
for...in is for itera...
How to make an Android device vibrate?
...el 26. Use vibrate(VibrationEffect) instead.
– Timo Bähr
Jan 23 '18 at 15:05
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show 1 more comment
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Why is React's concept of Virtual DOM said to be more performant than dirty model checking?
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Here's a comment by React team member Sebastian Markbåge which sheds some light:
React does the diffing on the output (which is a known serializable format, DOM attributes). This means that the source data can be of any format. It can be immutable data structures and state in...
Where does this come from: -*- coding: utf-8 -*-
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actually, if I put a line like test1 = 'äöü' it will hint you to add such a headder to the file. (pycharm 2019.1)
– Cutton Eye
Sep 27 '19 at 10:33
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HTML5 Canvas vs. SVG vs. div
What is the best approach for creating elements on the fly and being able to move them around? For example, let's say I want to create a rectangle, circle and polygon and then select those objects and move them around.
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App Inventor 2 接入百度网盘API · App Inventor 2 中文网
...URL中拿出access_token，后面操作都需要它：
http://openapi.baidu.com/oauth/2.0/authorize?display=mobile&response_type=token&client_id=[AppKey]&redirect_uri=oob&scope=basic,netdisk
请注意：手机的话，必须将 display=mobile 加上，以展示手机版的授权画面（电脑...
Retrieving the last record in each group - MySQL
There is a table messages that contains data as shown below:
27 Answers
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