大约有 20,000 项符合查询结果（耗时：0.0219秒） [XML]
Hibernate Error: org.hibernate.NonUniqueObjectException: a different object with the same identifier
...t most often happens via cascading saves where there is a cascade save between object A and B, but object B has already been associated with the session but is not on the same instance of B as the one on A.
What primary key generator are you using?
The reason I ask is this error is related to how...
Warning: Null value is eliminated by an aggregate or other SET operation in Aqua Data Studio
...r literal)? The Where clause already specifies "and closed is NULL" so no need for summing a case statement in this instance. Also, I've heard (aeons ago) that "count(*)" is not as efficient as counting a single column or literal but not sure if that is still the case.
– RowanP...
std::string formatting like sprintf
... right?
– AturSams
Aug 17 '15 at 12:04
What code analysis tools do you use for your Java projects? [closed]
...integrate these tools with an Ant-based build. You can follow the link to see my commented configuration.
In addition to the simple integration into the build, I find it helpful to configure the tools to be somewhat "integrated" in a couple of other ways. Namely, report generation and warning suppr...
what is the difference between a portlet and a servlet?
...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...
Getting a random value from a JavaScript array
...new. I was discussing the case where it equals EXACTLY 1, but apparently (according to W3Schools) Math.random is between 0 inclusive and 1 exclusive. My bad.
– SapphireSun
Jan 20 '14 at 0:14
...
What does -fPIC mean when building a shared library?
...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...
Is .NET/Mono or Java the better choice for cross-platform development? [closed]
... it lags behind the Microsoft implementation significantly. The Java SDK seems to stay in better sync across platforms (and it works on more platforms).
I'd also say Java has more tool availability across all those platforms, although there are plenty of tools available for .NET on Windows platf...
Is Fortran easier to optimize than C for heavy calculations?
...
jaredorjaredor
2,10411 gold badge1313 silver badges88 bronze badges
...
Use JavaScript to place cursor at end of text in text input element
... end of the text in a input text element via JavaScript - after focus has been set to the element?
32 Answers
...