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Show or hide element in React

I am messing around with React.js for the first time and cannot find a way to show or hide something on a page via click event. I am not loading any other library to the page, so I am looking for some native way using the React library. This is what I have so far. I would like to show the results...
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Hashing a dictionary?

...dictionary is not nested, you could make a frozenset with the dict's items and use hash(): hash(frozenset(my_dict.items())) This is much less computationally intensive than generating the JSON string or representation of the dictionary. UPDATE: Please see the comments below, why this approach mi...
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What's the idiomatic syntax for prepending to a short python list?

... explanation for the missing list.prepend() . Assuming my list is short and performance concerns are negligible, is 4 A...
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Bootstrapping still requires outside support

...or the language in itself. I was wondering how this could be accomplished and looked around a bit, and saw someone say that it could only be done by either ...
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String.format() to format double in java

... If there is more than one double to format, use %1, %2, and so on. For example String.format("%1$,.2f, %2$,.2f", myDouble, aDouble) – Moesio Mar 10 '13 at 5:29 ...
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Editing Javascript using Chrome Developer Tools

...as well as watched a few videos. The fact is, when I go to the sources tab and open the file I want to edit, I can't do anything to it. Is there some step I am missing? ...
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PHP: How to generate a random, unique, alphanumeric string for use in a secret link?

How would it be possible to generate a random, unique string using numbers and letters for use in a verify link? Like when you create an account on a website, and it sends you an email with a link, and you have to click that link in order to verify your account ...
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Padding or margin value in pixels as integer using jQuery

... FYI: jQuery does add the 'px', so Ian's solution works and will also return an integer when passed into parseInt() -- and it doesn't require a plugin: parseInt($('a').css('margin-top').replace('px', '')) – Peter Rust Jan 23 '11 at 0:55 ...
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System.BadImageFormatException: Could not load file or assembly [duplicate]

service is x86 compiled even both computers are x64 and it works on my computer. Here in server where is win 2008 i get this error. ...
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How do I prevent 'git diff' from using a pager?

Is there a command line switch to pass to git diff and other commands that use the less pager by default? 17 Answers ...