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what's data-reactid attribute in html?

...ct applications can be rendered at the server as well as the client. Internally React builds up a representation of references to the DOM nodes that make up your application (simplified version is below). { id: '.1oqi7occu80', node: DivRef, children: [ { id: '.1oqi7occu80.0', ...
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What's the difference between ASCII and Unicode?

...than) 221 characters, which, similarly, map to numbers 0–221 (though not all numbers are currently assigned, and some are reserved). Unicode is a superset of ASCII, and the numbers 0–127 have the same meaning in ASCII as they have in Unicode. For example, the number 65 means "Latin capital 'A'"...
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What's the best way to join on the same table twice?

...a fan of natural keys and this is a great example why. Natural keys, especially things like phone numbers, can change and frequently so. Updating your database when that change happens will be a HUGE, error-prone headache. * Method 1 as you describe it is your best bet though. It looks a bit terse ...
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Getters \ setters for dummies

... Isnt it really painful that MS does not support JS correctly and they do not make their silverlight run everywhere, so I have to program everything twice, one for SL and one for rest of the world :) – Akash Kava ...
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Javascript reduce on array of objects

...eration 2: a = 3, b = {x:2} returns NaN A number literal 3 does not (typically) have a property called x so it's undefined and undefined + b.x returns NaN and NaN + <anything> is always NaN Clarification: I prefer my method over the other top answer in this thread as I disagree with the ide...
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Groovy: what's the purpose of “def” in “def x = 0”?

...e bindings for the current script and groovy treats it (mostly) like a globally scoped variable: x = 1 assert x == 1 assert this.binding.getVariable("x") == 1 Using the def keyword instead does not put the variable in the scripts bindings: def y = 2 assert y == 2 try { this.binding.getVari...
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What is the Invariant Culture?

... be read and written regardless of the culture the user has defined. Basically it is a specific culture that is artificial and will not change. share | improve this answer | ...
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Control the size of points in an R scatterplot?

.... I'm making scatterplots with tens of thousands of points and prefer a small, but not too small dot. Basically, I find pch='.' to be too small, but pch=19 to be too fat. Is there something in the middle or some way to scale the dots down somehow? ...
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Catch an exception thrown by an async void method

...ET, is it possible to catch an exception thrown by an async method in the calling method? 6 Answers ...
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How I can I lazily read multiple JSON values from a file/stream in Python?

... JSON generally isn't very good for this sort of incremental use; there's no standard way to serialise multiple objects so that they can easily be loaded one at a time, without parsing the whole lot. The object per line solution that y...