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How to import a class from default package
...project with some package structure along with the default package. I have one class in default package - Calculations.java and I want to make the use of that class in any of the package (for instance in com.company.calc ). When I try to make the use of the class which is in the default package, ...
ant warning: “'includeantruntime' was not set”
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As @Daniel Kutik mentioned, presetdef is a good option. Especially if one is working on a project with many build.xml files which one cannot, or prefers not to, edit (e.g., those from third-parties.)
To use presetdef, add these lines in your top...
Azure table storage returns 400 Bad Request
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400 Error means there's something wrong with the value of one of your properties. One way to find out is to trace the request/response through Fiddler and see the actual data being sent to Windows Azure Storage.
Taking a wild guess, I'm assuming by taking a quick glance at your co...
How fast is D compared to C++?
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One big thing that slows D down is a subpar garbage collection implementation. Benchmarks that don't heavily stress the GC will show very similar performance to C and C++ code compiled with the same compiler backend. Benchm...
What does threadsafe mean?
...”
“…and the need for a shared piece of data to be accessed by only one
thread at any given time.”
Definitely worth a read!
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Bootstrap 3 collapsed menu doesn't close on click
...nd bootstrap, see the answer of @raisercostin).
– RomOne
Feb 15 '17 at 0:54
@RomOne This answer is correct. Bootstrap ...
How can I SELECT rows with MAX(Column value), DISTINCT by another column in SQL?
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With SQLite, the first one is much much slower than La Voie's version when there is no index on the matched column (i.e. "home"). (Tested with 24k rows resulting in 13k rows)
– Thomas Tempelmann
Apr 30 '15 at ...
Execute unit tests serially (rather than in parallel)
...ll of them down and restart them whenever a new service is added or an old one is removed.
11 Answers
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How do I disable fail_on_empty_beans in Jackson?
...r class, try @JsonSerialize above class declaration.
For a mapper, here's one example:
ObjectMapper mapper = new ObjectMapper();
mapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
// do various things, perhaps:
String someJsonString = mapper.writeValueAsString(someClassInstance);
S...
MySQL - UPDATE query based on SELECT Query
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You can actually do this one of two ways:
MySQL update join syntax:
UPDATE tableA a
INNER JOIN tableB b ON a.name_a = b.name_b
SET validation_check = if(start_dts > end_dts, 'VALID', '')
-- where clause can go here
ANSI SQL syntax:
UPDATE tab...