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Hibernate - Batch update returned unexpected row count from update: 0 actual row count: 0 expected:
... give you a better idea as to which line causes the problem.
Create a unit test which replicates the problem without configuring a transaction manager in Spring. This should give you a better idea of the offending line of code.
Hope that helps.
...
C++ performance challenge: integer to std::string conversion
...he second algorithm is my actual submission for highest performance. In my tests it beats all the others on both gcc and msvc.
I think I know why some of the results on MSVC are very good. std::string has two relevant constructors
std::string(char* str, size_t n)
and
std::string(ForwardIterator b...
What is reflection and why is it useful?
...l use reflection to look through your classes for methods tagged with the @Test annotation, and will then call them when running the unit test.
There are some good reflection examples to get you started at http://docs.oracle.com/javase/tutorial/reflect/index.html
And finally, yes, the concepts are...
How to get the source directory of a Bash script from within the script itself?
...s the right command. See gist.github.com/tvlooy/cbfbdb111a4ebad8b93e for a testcase
– tvlooy
Jun 9 '15 at 19:32
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Count all occurrences of a string in lots of files with grep
...one shows the relevant files and then the total count of matches: grep -rc test . | awk -F: '$NF > 0 {x+=$NF; $NF=""; print} END{print "Total:",x}'
– Yaron
Sep 6 '17 at 11:40
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What Git branching models work for you?
...u should, in your repository, probably make another branch and merge the latest master into yourbranch so that someone else can pull your changes with as little effort as possible. There is very rarely a need to truly rebase, in my experience.
I think it's a case of understanding the way Git works a...
What is the difference between parseInt() and Number()?
... time I've seen NaN. It may be helpful for some folks to know that NaN is tested with the function isNaN ( value ). Just using "if ( value == NaN )", for example, won't work.
– WonderfulDay
May 4 '13 at 9:54
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Using Default Arguments in a Function
... ReflectionFunction('foo'))->getParameters()[1]->getDefaultValue(), 'test');
Whether you would want to do so is another story :)
UPDATE:
The reasons to avoid this solution are:
it is (arguably) ugly
it has an obvious overhead.
as the other answers proof, there are alternatives
But it can a...
What is the fastest substring search algorithm?
...
Build up a test library of likely needles and haystacks. Profile the tests on several search algorithms, including brute force. Pick the one that performs best with your data.
Boyer-Moore uses a bad character table with a good suffix...
In C#, how do I calculate someone's age based on a DateTime type birthday?
...
Here is a test snippet:
DateTime bDay = new DateTime(2000, 2, 29);
DateTime now = new DateTime(2009, 2, 28);
MessageBox.Show(string.Format("Test {0} {1} {2}",
CalculateAgeWrong1(bDay, now), // outputs 9
...