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Hibernate problem - “Use of @OneToMany or @ManyToMany targeting an unmapped class”
... to check:
make sure the annotation is javax.persistence.Entity, and not org.hibernate.annotations.Entity. The former makes the entity detectable. The latter is just an addition.
if you are manually listing your entities (in persistence.xml, in hibernate.cfg.xml, or when configuring your session f...
Which Eclipse version should I use for an Android app?
...ge, the question must be unasked:
The Eclipse ADT plugin is no longer supported, as per this announcement in June 2015.
The Eclipse ADT plugin has many known bugs and potential security bugs that will not be fixed.
You should immediately switch to use Android Studio, the official IDE for Android....
How to add \newpage in Rmarkdown in a smart way?
...
Simply \newpage or \pagebreak will work, e.g.
hello world
\newpage
```{r, echo=FALSE}
1+1
```
\pagebreak
```{r, echo=FALSE}
plot(1:10)
```
This solution assumes you are knitting PDF. For HTML, you can achieve a similar effect by adding a ...
What is a tracking branch?
...es fetches all the remote references and then automatically merges in the corresponding remote branch.
When you clone a repository, it generally automatically creates a master branch that tracks origin/master. That’s why git push and git pull work out of the box with no other arguments. However, ...
How to set NODE_ENV to production/development in OS X
For use in express.js environments. Any suggestions?
14 Answers
14
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Keep-alive header clarification
...puter A and server F")?
A TCP connection is recognized by source IP and port and destination IP and port. Your OS, all intermediate session-aware devices and the server's OS will recognize the connection by this.
HTTP works with request-response: client connects to server, performs a request and ...
What is ASP.NET Identity's IUserSecurityStampStore interface?
... in ASP.NET), I came across this interface when implementing my own UserStore :
3 Answers
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How can one check to see if a remote file exists using PHP?
...
You can instruct curl to use the HTTP HEAD method via CURLOPT_NOBODY.
More or less
$ch = curl_init("http://www.example.com/favicon.ico");
curl_setopt($ch, CURLOPT_NOBODY, true);
curl_exec($ch);
$retcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
// $retcode >= 400 -> not found, $retcode = ...
C++ “virtual” keyword for functions in derived classes. Is it necessary?
...is no difference between them other than that the first approach requires more typing and is potentially clearer.
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What exception classes are in the standard C++ library
...at are included in the standard C++ library, and what should they be used for? I know there are a few new C++11 exceptions, but I'm not sure what they are or where they are.
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