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JPA CascadeType.ALL does not delete orphans
...eType.DELETE_ORPHAN, which can be used in conjunction with JPA CascadeType.ALL.
If you don't plan to use Hibernate, you'll have to explicitly first delete the child elements and then delete the main record to avoid any orphan records.
execution sequence
fetch main row to be deleted
fetch child...
How to bind multiple values to a single WPF TextBlock?
...
@Preet - I'm actually not certain if the '{}' is necessary in this case, I included it since it was used on the MSDN sample. In general however, it is needed as an escape sequence for the XAML parser to avoid confusion with the Binding marku...
C++ inheritance - inaccessible base?
...
You have to do this:
class Bar : public Foo
{
// ...
}
The default inheritance type of a class in C++ is private, so any public and protected members from the base class are limited to private. struct inheritance on the other hand is public by default.
...
HTTP test server accepting GET/POST requests
...ou can then submit data:
$ curl -d "[1,2,3]" -XPOST http://localhost:3000/foo/bar
which will be shown in the server's stdout:
POST /foo/bar
{ host: 'localhost:3000',
'user-agent': 'curl/7.54.1',
accept: '*/*',
'content-length': '7',
'content-type': 'application/x-www-form-urlencoded' }
B...
How do I set the proxy to be used by the JVM
...roxyHosts property!
-Dhttp.nonProxyHosts="localhost|127.0.0.1|10.*.*.*|*.foo.com|etc"
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Can anyone explain IEnumerable and IEnumerator to me? [closed]
...n you write code like:
foreach (Foo bar in baz)
{
...
}
it's functionally equivalent to writing:
IEnumerator bat = baz.GetEnumerator();
while (bat.MoveNext())
{
bar = (Foo)bat.Current
...
}
By "functionally equivalent," I mean that's actually what the compiler turns the code into. Yo...
Should I use SVN or Git? [closed]
...r. It's decentralised to a point where people can track their own edits locally without having to push things to an external server.
SVN is designed to be more central where Git is based on each user having their own Git repo and those repos push changes back up into a central one. For that reason,...
jQuery: click function exclude children.
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My solution:
jQuery('.foo').on('click',function(event){
if ( !jQuery(event.target).is('.foo *') ) {
// code goes here
}
});
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Correct way to delete cookies server-side
...path=/; expires=Thu, 01 Jan 1970 00:00:00 GMT
Note that you cannot force all browsers to delete a cookie. The client can configure the browser in such a way that the cookie persists, even if it's expired. Setting the value as described above would solve this problem.
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Why is this program valid? I was trying to create a syntax error
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Perl has a syntax called "indirect method notation". It allows
Foo->new($bar)
to be written as
new Foo $bar
So that means
Syntax error ! exit 0;
is the same as
error->Syntax(! exit 0);
or
error->Syntax(!exit(0));
Not only is it valid syntax, it doesn't result in a ...