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Detect iPad Mini in HTML5
...1004
iPad 2
screen.availWidth = 748
screen.availHeight = 1024
Source: http://konstruktors.com/blog/web-design/4396-detect-ipad-mini-javascript/
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When to use SELECT … FOR UPDATE?
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Compute a confidence interval from sample data
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Refreshing OAuth token using Retrofit without modifying all calls
...ed. When the token expires, the next call will return with an Unauthorized HTTP code, so that's easy to monitor.
We could modify each Retrofit call the following way:
In the failure callback, check for the error code, if it equals Unauthorized, refresh the OAuth token, then repeat the Retrofit call....
How do I reference an existing branch from an issue in GitHub?
...e a reference to a branch compared to another branch. If you enter this:
https://github.com/user1/repo/compare/branch1...branch2
it will render as
branch1...branch2
Also, you can compare branches across forks. If user2 has forked repo, this works:
https://github.com/user1/repo/compare/branc...
Determine project root from a running node.js application
...oach this, each with their own pros and cons:
require.main.filename
From http://nodejs.org/api/modules.html:
When a file is run directly from Node, require.main is set to its module. That means that you can determine whether a file has been run directly by testing require.main === module
...
A field initializer cannot reference the nonstatic field, method, or property
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assign multiple variables to the same value in Javascript
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throw new std::exception vs throw std::exception
...
The C++ FAQ has a nice discussion on this:
https://isocpp.org/wiki/faq/exceptions#what-to-catch
https://isocpp.org/wiki/faq/exceptions#catch-by-ptr-in-mfc
Basically "unless there's a good reason not to, catch by reference. Avoid catching by value, since that causes ...
byte[] to hex string [duplicate]
...d pre-build the translation table like so to achieve even faster results:
http://blogs.msdn.com/b/blambert/archive/2009/02/22/blambert-codesnip-fast-byte-array-to-hex-string-conversion.aspx
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