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How to persist a property of type List in JPA?
...tring) {
return Arrays.asList(string.split(SPLIT_CHAR));
}
}
Now use it on your Entities like this:
@Convert(converter = StringListConverter.class)
private List<String> yourList;
In the database your list will be stored as foo;bar;foobar and in your Java object you will get a ...
Create an enum with string values
...
TypeScript 2.4
Now has string enums so your code just works:
enum E {
hello = "hello",
world = "world"
};
????
TypeScript 1.8
Since TypeScript 1.8 you can use string literal types to provide a reliable and safe experience for ...
Octave-Gnuplot-AquaTerm error: set terminal aqua enhanced title “Figure 1”…unknown terminal type"
...y home directory (~/.octaverc) not the directory mentioned above. I don't know what the difference is but home directory seems to be more installation neutral.
– sepans
Mar 29 '14 at 15:17
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Is returning null bad design? [closed]
... getItems(); // Could potentially return null.
// Two possible code paths now so harder to test.
if (c != null) {
for (Item item : c) {
// Process item.
}
}
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...
How to check for file lock? [duplicate]
...very next second (read: short timespan).
Why specifically do you need to know if the file is locked anyway? Knowing that might give us some other way of giving you good advice.
If your code would look like this:
if not locked then
open and update file
Then between the two lines, another pro...
XAMPP, Apache - Error: Apache shutdown unexpectedly
...PP, and when I try to start my Apache server in the XAMPP Control Panel, I now get the following errors:
50 Answers
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What uses are there for “placement new”?
...he lifetime of the original char objects by re-using their storage. If you now call delete[] buf the dynamic type of the object(s) pointed to no longer matches their static type so you have undefined behaviour. It is more consistent to use operator new/operator delete to allocate raw memory inteded ...
how to convert from int to char*?
The only way I know is:
9 Answers
9
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Change text color based on brightness of the covered background area?
I've thought about the following for a while already, so now I want to know your opinions, possible solutions, and so on.
8...
In Objective-C why should I check if self = [super init] is not nil?
... not hell bent on not following best practices. I would, however, like to know why they are best practises in the first place. Its like being told to jump off a tower. You don't just go ahead and do it unless you know why. Is there a big, soft pillow to land on at the bottom, with a massive cash rew...