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what is the preferred way to mutate a React state?

... 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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Technically what is the main difference between Oracle JDK and OpenJDK? [duplicate]

I have been using OpenJDK for ages, initially for small projects where it has no problems. But since I started to play with it for big toys, I started to notice random/unknown fatal error and crashes (with H.264 codecs, etc.), and it was a nightmare till then to get ride of system crash+fatal errors...
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How do I measure the execution time of JavaScript code with callbacks?

... So what's the difference between console.time() and process.hrtime() in the below answer? – yellow-saint Feb 20 '15 at 14:43 ...
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Maven compile with multiple src directories

...urce directory (containing Java class that i'm using in my maven project). What if my external source is located outside my Eclipse's workspace? What can i do? – Aerox May 1 '15 at 15:05 ...
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How to scale an Image in ImageView to keep the aspect ratio

...to fit the rescaled image. For example, if you have a rectangular image in what would normally be a square ImageView, adjustViewBounds=true will make it resize the ImageView to be rectangular as well. This then affects how other Views are laid out around the ImageView. Then as Samuh wrote, you can c...
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Master-master vs master-slave database architecture?

...fficult because each piece of data has exactly one owning master. But then what do you do if you can't see that master, some kind of postponed work is needed. Master-Master: well if you can make it work then it seems to offer everything, no single point of failure, everyone can work all the time. T...
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What does $_ mean in PowerShell?

I've seen the following a lot in PowerShell, but what does it do exactly? 6 Answers 6 ...
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Compare two DataFrames and output their differences side-by-side

I am trying to highlight exactly what changed between two dataframes. 14 Answers 14 ...
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Regular expression to extract text between square brackets

... what does the character class [^]] mean? What does it match? – Richard Sep 15 '13 at 13:25 3 ...
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Find and Replace Inside a Text File from a Bash Command

What's the simplest way to do a find and replace for a given input string, say abc , and replace with another string, say XYZ in file /tmp/file.txt ? ...