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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.
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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...
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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In C#, how do I calculate someone's age based on a DateTime type birthday?
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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
...
What is the difference between CMD and ENTRYPOINT in a Dockerfile?
... the image without any argument will ping the localhost:
$ docker run -it test
PING localhost (127.0.0.1): 48 data bytes
56 bytes from 127.0.0.1: icmp_seq=0 ttl=64 time=0.096 ms
56 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.088 ms
56 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0.088 ms
^C--- l...
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...
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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'is' versus try cast with null check
...actually happens below the belt. Take a look at this example:
object o = "test";
if (o is string)
{
var x = (string) o;
}
This translates to the following IL:
IL_0000: nop
IL_0001: ldstr "test"
IL_0006: stloc.0 // o
IL_0007: ldloc.0 // o
IL_0008: isinst Syste...
How do I pass a method as a parameter in Python
...e is your example re-written to show a stand-alone working example:
class Test:
def method1(self):
return 'hello world'
def method2(self, methodToRun):
result = methodToRun()
return result
def method3(self):
return self.method2(self.method1)
test = Tes...
Determine project root from a running node.js application
... That means that you can determine whether a file has been run directly by testing require.main === module
Because module provides a filename property (normally equivalent to __filename), the entry point of the current application can be obtained by checking require.main.filename.
So if you w...