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Volatile vs Static in Java
...riable for each Object. So, on the surface it seems there is no difference from a normal variable but totally different from static. However, even with Object fields, a thread may cache a variable value locally.
This means that if two threads update a variable of the same Object concurrently, and t...
What is the difference between 0.0.0.0, 127.0.0.1 and localhost?
...ilable network interface". The loopback adapter with IP address 127.0.0.1 from the perspective of the server process looks just like any other network adapter on the machine, so a server told to listen on 0.0.0.0 will accept connections on that interface too.
That hopefully answers the IP side of ...
Multiple levels of 'collection.defaultdict' in Python
...
Use:
from collections import defaultdict
d = defaultdict(lambda: defaultdict(int))
This will create a new defaultdict(int) whenever a new key is accessed in d.
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How to use Bitbucket and GitHub at the same time for one project?
...rule applies to pulling: you need to specify which remote you want to pull from:
$ git pull github your_branch
$ git pull bitbucket your_branch
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Best practices for using Markers in SLF4J/Logback
...es"
[Markers] are used for "special" events that you want to have filtered from usual ones
So your assertion that You want to use MDC for this. Markers are for highlighting "special" events--filtering, if you will--rather than "slicing". For example, you might slice based on a particular user, but...
What's with 181783497276652981 and 8682522807148012 in Random (Java 7)?
...eed of the random number generator to a
value very likely to be distinct from any other invocation of this
constructor.
could be extended by "across threads" and "uncorrelated"
Seed Sequence Quality
But the randomness of the seeding sequence is only as good as the underlying RNG.
The RNG us...
Moment.js - how do I get the number of years since a date, not rounded up?
...person's age using Moment.js , but I'm finding that the otherwise useful fromNow method rounds up the years. For instance, if today is 12/27/2012 and the person's birth date is 02/26/1978, moment("02/26/1978", "MM/DD/YYYY").fromNow() returns '35 years ago'. How can I make Moment.js ignore the n...
pinpointing “conditional jump or move depends on uninitialized value(s)” valgrind message
So I've been getting some mysterious uninitialized values message from valgrind and it's been quite the mystery as of where the bad value originated from.
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What is Persistence Context?
..., So once the transaction is finished, all persistent objects are detached from the EntityManager's persistence context and are no longer managed.
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error: request for member '..' in '..' which is of non-class type
... have mandated "void" parameter so that this usage would have been allowed from consistency point of view. If I am not mistaken, K&R C had mandatory usage of term void.
– Rajesh
Jan 22 '18 at 5:08
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