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What characters are allowed in an email address?

...f = atom ; symbolic reference And as usual, Wikipedia has a decent article on email addresses: The local-part of the email address may use any of these ASCII characters: uppercase and lowercase Latin letters A to Z and a to z; digits 0 to 9; special charac...
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Hibernate vs JPA vs JDO - pros and cons of each? [closed]

...cially when there are a lot of objects. There is a detailed technical description of Hibernate's dirty checking mechanism in this SO answer: JPA with HIBERNATE insert very slow share | improve this...
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How does libuv compare to Boost/ASIO?

... yes Asio Sending: yes no IPC: UNIX Domain Sockets: yes Asio Windows Named Pipe: yes Asio Process Management: Detaching: yes Process I/O Pipe: yes Process Spawning: ...
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Where are my postgres *.conf files?

...stgresql superuser (e.g. sudo -u postgres psql). – Skippy le Grand Gourou Dec 6 '14 at 19:23  |  show 7 more comments ...
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Why do access tokens expire?

...r, it will refresh and send me a new one. What's to stop that? Don't say IP Address or even MAC, because that's unreasonable. – Suamere Sep 24 '15 at 18:57 3 ...
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RabbitMQ and relationship between channel and connection

...nections. You can use one Channel for everything. However, if you have multiple threads, it's suggested to use a different Channel for each thread. Channel thread-safety in Java Client API Guide: Channel instances are safe for use by multiple threads. Requests into a Channel are serialized, ...
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How to debug Lock wait timeout exceeded on MySQL?

...ySQL thread id 276558, OS thread handle 0x7f93762e7710, query id 59264109 [ip] [database] cleaning up Trx read view will not see trx with id >= 2744943821, sees < 2744943821 (unsure if the "Trx read view" message is related to the frozen lock, but unlike the other active transactions, this o...
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Why does one use dependency injection?

...So, e.g. an interface may be something such as IDisposable, IEnumerable or IPrintable. A class is an actual implementation of one or more of these interfaces: List or Map may both be implementations of IEnumerable. To get the point: Often your classes depend on each other. E.g. you could have a Dat...
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What are the differences between local branch, local tracking branch, remote branch and remote track

...m:Flimm/example.git HEAD branch: master Remote branches: io-socket-ip new (next fetch will store in remotes/origin) master tracked new-branch tracked Local ref configured for 'git pull': master merges with remote master new-branc...
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How to avoid reverse engineering of an APK file?

... is looking for a needle in a haystack. Insert random classes containing snippets from the internet, or just functions for calculating random things like the Fibonacci sequence. Make sure these classes compile, but aren't used by the actual functionality of the app. Add enough of these false classes...