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Should I declare Jackson's ObjectMapper as a static field?
... unit tests. For example, with a static final ObjectMapper, you can't swap out the JSON serialization for dummy code or a no-op.
In addition, a static final prevents you from ever reconfiguring ObjectMapper at runtime. You might not envision a reason for that now, but if you lock yourself into a st...
NULL values inside NOT IN clause
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Has anybody ever pointed out that converting NOT IN to a series of <> and changes the semantic behavior of not in this set to something else?
– Ian Boyd
Oct 13 '10 at 14:47
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How can I git stash a specific file?
How can I stash a specific file leaving the others currently modified out of the stash I am about to save?
3 Answers
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How do I open links in Visual Studio in my web browser and not in Visual Studio?
...Hub supports Visual Studio 2010.)
Thanks goes to Dmitry for pointing this out in his answer to this similar question.
EDIT: The Visual Studio team is finally starting to work on putting this right into Visual Studio. Status of this feature request just moved from "Under Review" to "Started".
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Search code inside a Github project
...or message doesn't help you at all.
No amount of "quoting it" will get you out of this error.
once you get that error message, you don't get the sections reminding you of the right association between the search selectors ("Repositories", "Users" or "Language") and the (right) search filters (here "...
What's the best way to parse command line arguments? [closed]
...s optparse. See this answer for more information.
As other people pointed out, you are better off going with optparse over getopt. getopt is pretty much a one-to-one mapping of the standard getopt(3) C library functions, and not very easy to use.
optparse, while being a bit more verbose, is much ...
How to free memory in Java?
...blo Santa Cruz What do you mean it does not free memory? I just tested it out on my program that seemed to have a leak and the ram usage seemed to stabilize? And Daniel just said it only suggests it then how come the percentage of ram used always stabilized each time I called the method. You people...
Redis - Connect to Remote Server
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The OP did say he commented out the local bind rule, which tells redis to bind to all the addresses on the system. I wouldn't call the -1 rude, just inappropriate. The OP specifically stated he had IPtables rules in place, thus it is clear there are fir...
What is the purpose of the var keyword and when should I use it (or omit it)?
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@Mageek He might be taking about eval-declared variables which are deletable. I wrote a blog post about this once.
– kangax
Jun 20 '12 at 11:06
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Is Meyers' implementation of the Singleton pattern thread safe?
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To answer your question about why it's not threadsafe, it's not because the first call to instance() must call the constructor for Singleton s. To be threadsafe this would have to occur in a critical section, and but there's no requirement in the stan...