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What is an EJB, and what does it do?
...on: other EJBs, or resources like a JPA entity manager, a JDBC datasource, etc. can be injected into the EJB.
concurrency: the container makes sure that only one thread at a time invokes a method of your EJB instance.
distribution: some EJBs can be called remotely, from another JVM.
failover and loa...
Is it possible to move/rename files in Git and maintain their history?
...hoice of Git since it's allegedly much more powerful than tracking renames etc.
– Emil Lundberg
Sep 6 '13 at 14:58
132
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Reading in a JSON File Using Swift
I'm really struggling with trying to read a JSON file into Swift so I can play around with it. I've spent the best part of 2 days re-searching and trying different methods but no luck as of yet so I have signed up to StackOverFlow to see if anyone can point me in the right direction.....
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Can I escape html special chars in javascript?
...
I think regular expressions in replace() calls are unnecessary. Plain old single-character strings would do just as well.
– jamix
May 30 '14 at 14:47
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Prevent tabstop on A element (anchor link) in HTML
...erlink goes against accessibility rules (e.g. people using screen readers, etc). If you know that this isn't a problem for your user base, then it should be fine.
– Ricardo Sanchez
Mar 29 '18 at 0:27
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php execute a background process
...te the process as a server-side script in whatever language (php/bash/perl/etc) is handy and then call it from the process control functions in your php script.
The function probably detects if standard io is used as the output stream and if it is then that will set the return value..if not then it...
Why does InetAddress.isReachable return false, when I can ping the IP address?
...achine
// openPort = 22 - ssh, 80 or 443 - webserver, 25 - mailserver etc.
try {
try (Socket soc = new Socket()) {
soc.connect(new InetSocketAddress(addr, openPort), timeOutMillis);
}
return true;
} catch (IOException ex) {
return false;
}...
Count rows with not empty value
...t by using some extra formulas like containing some concatinate/split/join etc, ill get back to you if i solve it.
– consideRatio
Jan 9 '15 at 23:18
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How can I rename a database column in a Ruby on Rails migration?
...f your app running, say in different environments or on multiple computers etc, managing edited migrations is a major pain. I only edit a migration if I just created it and realized it was wrong, and haven't run it literally anywhere else yet.
– Yetanotherjosh
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Why can I access private variables in the copy constructor?
...paring, adding/multiplying/dividing, copy-constructing, cloning, assigning etc. then it's often the case that you either simply must have access to private and/or protected data in the other object, or want it to allow a simpler, faster or generally better function implementation.
Specifically, the...