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What are these attributes: `aria-labelledby` and `aria-hidden`

...ions (ARIA) defines ways to make Web content and Web applications (especially those developed with Ajax and JavaScript) more accessible to people with disabilities. To be precise for your question, here is what your attributes are called as ARIA attribute states and model aria-labelledby: ...
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Convert list to dictionary using linq and not worrying about duplicates

...t 2.0 framework at work... @onof Not exactly hard to ignore case. Just add all keys in uppercase. – Carra Jul 23 '10 at 14:42 ...
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Disable vertical scroll bar on div overflow: auto

Is it possible to allow only a horizontal scroll bar when using overflow:auto (or scroll)? 8 Answers ...
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Heroku Postgres - terminate hung query (idle in transaction)

... (The query may need mending dependent of the version of postgres - eventually, just select * from pg_stat_activity). You'll find the pid in the first (left) column, and the first (top) row is likely to be the query you'd like to terminate. I'll assume the pid is 1234 below. You may cancel a que...
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CSS3 :unchecked pseudo-class

... This may seem inconsistent with the :enabled and :disabled states, especially since an element can be neither enabled nor disabled (i.e. the semantics completely do not apply), however there does not appear to be any explanation for this inconsistency. (:indeterminate does not count, because an e...
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How to reset db in Django? I get a command 'reset' not found error

... It looks like the 'flush' answer will work for some, but not all cases. I needed not just to flush the values in the database, but to recreate the tables properly. I'm not using migrations yet (early days) so I really needed to drop all the tables. Two ways I've found to drop all ...
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How do CUDA blocks/warps/threads map onto CUDA cores?

I have been using CUDA for a few weeks, but I have some doubts about the allocation of blocks/warps/thread. I am studying the architecture from a didactic point of view (university project), so reaching peak performance is not my concern. ...
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How to pass event as argument to an inline event handler in JavaScript?

...lobal event object. It's because the context in which the DOM0 handler is called has an event object, even if [on some browsers] it isn't a global.) – T.J. Crowder May 6 '13 at 18:04 ...
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How to securely store access token and secret in Android?

...other apps cannot access them. On a rooted devices, if the user explicitly allows access to some app that is trying to read them, the app might be able to use them, but you cannot protect against that. As for encryption, you have to either require the user to enter the decrypt passphrase every time ...
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What is the Java equivalent of PHP var_dump?

...for free. It is done with convention rather than language constructs. In all data transfer classes (and maybe even in all classes you write...), you should implement a sensible toString method. So here you need to override toString() in your Person class and return the desired state. There are u...