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what is the preferred way to mutate a React state?

... a list of plain objects in my this.state.list that I can then use to render a list of children. What then is the right way to insert object into this.state.list ? ...
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Clean up a fork and restart it from the upstream

I have forked a repository, then I made some changes and it looks like I've messed up everything. 4 Answers ...
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What is the meaning of “__attribute__((packed, aligned(4))) ”

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In ASP.NET, when should I use Session.Clear() rather than Session.Abandon()?

Both Session.Clear() and Session.Abandon() get rid of session variables. As I understand it, Abandon() ends the current session, and causes a new session to be created thus causing the End and Start events to fire. ...
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What CSS selector can be used to select the first div within another div

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Extract a substring from a string in Ruby using a regular expression

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How does lombok work?

I met lombok today. I'm very anxious to know how it works. A Java Geek Article gives some clues but it's not perfectly clear to me: ...
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How to stop Eclipse formatter from placing all enums on one line

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git - Find commit where file was added

Say I have a file foo.js that was committed some time ago. I would like to simply find the commit where this file was first added. ...
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When applying a patch is there any way to resolve conflicts?

I am on windows. 4 Answers 4 ...