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How can I maintain fragment state when added to the back stack?
I've written up a dummy activity that switches between two fragments. When you go from FragmentA to FragmentB, FragmentA gets added to the back stack. However, when I return to FragmentA (by pressing back), a totally new FragmentA is created and the state it was in is lost. I get the feeling I'm ...
Error 1046 No database Selected, how to resolve?
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edited Feb 24 '13 at 0:02
Piero
7,9451616 ...
GIF Animated 扩展：可点击透明背景动画GIF播放器 · App Inventor 2 中文网
... 版权信息
原作者：Juan Antonio
原始网址：https://community.appinventor.mit.edu/t/gif-animated-extension-clickable-transparent-background/1549
发布日期：2019年12月29日
最后编辑：2022年6月21日
技术来源：基于 Android 开源项目的 GifDeco...
Remove spaces from std::string in C++
What is the preferred way to remove spaces from a string in C++? I could loop through all the characters and build a new string, but is there a better way?
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Ruby convert Object to Hash
Let's say I have a Gift object with @name = "book" & @price = 15.95 . What's the best way to convert that to the Hash {name: "book", price: 15.95} in Ruby, not Rails (although feel free to give the Rails answer too)?
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How to call shell commands from Ruby
....e. standard output) of the shell command, just like the backticks.
Docs: https://docs.ruby-lang.org/en/master/syntax/literals_rdoc.html#label-Percent+Strings
value = %x( echo 'hi' )
value = %x[ #{cmd} ]
Kernel#system
Executes the given command in a subshell.
Returns true if the command was fo...
Get and Set a Single Cookie with Node.js HTTP Server
...which has a comprehensive set of features.
Documentation and examples at:
https://github.com/jed/cookies
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Detail change after Git pull
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
How to find the type of an object in Go?
How do I find the type of an object in Go? In Python, I just use typeof to fetch the type of object. Similarly in Go, is there a way to implement the same ?
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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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