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What's the right way to pass form element state to sibling/parent elements?

... So, if I'm understanding you correctly, your first solution is suggesting that you're keeping state in your root component? I can't speak for the creators of React, but generally, I find this to be a proper solution. Maintaining state is one...
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iOS: How to store username/password within an app?

I have a login-screen in my iOS app. The username and password will be saved in the NSUserDefaults and be loaded into the login-screen again when you enter the app again (of course, NSUserDefaults are permanent). ...
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Equation (expression) parser with precedence?

...'ve developed an equation parser using a simple stack algorithm that will handle binary (+, -, |, &, *, /, etc) operators, unary (!) operators, and parenthesis. ...
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What is the difference between association, aggregation and composition?

What is the difference between association, aggregation, and composition? Please explain in terms of implementation. 19 An...
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What is “entropy and information gain”?

I am reading this book ( NLTK ) and it is confusing. Entropy is defined as : 7 Answers ...
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Haskell testing workflow

I just started a new Haskell project and wanted to set up a good testing workflow from the beginning. It seems like Haskell has a lot of excellent and unique testing tools and many different ways to integrate them. ...
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What is the benefit of using Fragments in Android, rather than Views?

When developing for Android , you can set your target (or minimum) sdk to 4 (API 1.6) and add the android compatibility package (v4) to add support for Fragments . Yesterday I did this and successfully implemented Fragments to visualize data from a custom class. ...
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addEventListener vs onclick

What's the difference between addEventListener and onclick ? 16 Answers 16 ...
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Difference between PCDATA and CDATA in DTD

What is the difference between #PCDATA and #CDATA in DTD ? 6 Answers 6 ...
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Why would I make() or new()?

...ents dedicate many paragraphs to explaining the difference between new() and make() , but in practice, you can create objects within local scope and return them. ...