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What is the difference between the remap, noremap, nnoremap and vnoremap mapping commands in Vim?
... not to gg) because j will not be expanded for the non-recursive mapping.
Now remember that Vim is a modal editor. It has a normal mode, visual mode and other modes.
For each of these sets of mappings, there is a mapping that works in normal, visual, select and operator modes (:map and :noremap), ...
Create the perfect JPA entity [closed]
I've been working with JPA (implementation Hibernate) for some time now and each time I need to create entities I find myself struggling with issues as AccessType, immutable properties, equals/hashCode, ... .
So I decided to try and find out the general best practice for each issue and write this ...
Do fragments really need an empty constructor?
... paused.. Commonsguy should be able to explain better. In Short You don't know! :)
– Chris.Jenkins
May 5 '12 at 17:14
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How does Spring Data JPA differ from Hibernate for large projects?
...ing to your repositories package (it looks for *Impl classes automatically now):
@Configuration
@EnableJpaRepositories(basePackages = {"com.examples.repositories"})
@EnableTransactionManagement
public class MyConfiguration {
}
jpa-repositories.xml - tell Spring where to find your repositories. Al...
OSGi: What are the differences between Apache Felix and Apache Karaf?
...ich" sounds a bit like going back to the huge Java EE application servers. Now I'm not saying that Apache Karaf is anywhere near as big as those, I am just making a point that you can and should just deploy what you actually need.
– Marcel Offermans
Sep 19 '14 ...
Why is document.body null in my javascript?
... position of your <script> element, and load JavaScript last:
Right now, your <script> element is being loaded in the <head> element of your document. This means that it will be executed before the body has loaded. Google developers recommends moving the <script> tags to the...
Does Haskell require a garbage collector?
...y unnecessary.
jhc actually uses a sophisticated form of escape analysis known as region inference. Consider
f :: Integer -> (Integer, Integer)
f x = let x2 = x * x in (x2, x2+1)
g :: Integer -> Integer
g x = case f x of (y, z) -> y + z
In this case, a simplistic escape analysis would ...
How do malloc() and free() work?
I want to know how malloc and free work.
13 Answers
13
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What's the difference between JPA and Spring Data JPA?
...am a bit confused about the difference between Spring Data-JPA and JPA. I know about JPA that it is a specification for persisting the Java Objects to a relational database using popular ORM technology.
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You can't specify target table for update in FROM clause
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@grisson Thanks for the clarification. Now I get why my IN clause doesn't work - I was targeting the same table.
– Anthony
Sep 4 '12 at 2:43
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