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What's the difference between session.persist() and session.save() in Hibernate?
...also guarantees that it will
not execute an INSERT statement if it
is called outside of transaction
boundaries. This is useful in
long-running conversations with an
extended Session/persistence context.
A method like persist() is required.
save() does not guarantee the same, it...
Why is processing a sorted array faster than processing an unsorted array?
...ver have to stop.
If you guess wrong too often, you spend a lot of time stalling, rolling back, and restarting.
This is branch prediction. I admit it's not the best analogy since the train could just signal the direction with a flag. But in computers, the processor doesn't know which direction a b...
How to view the contents of an Android APK file?
...
Actually the apk file is just a zip archive, so you can try to rename the file to theappname.apk.zip and extract it with any zip utility (e.g. 7zip).
The androidmanifest.xml file and the resources will be extracted and can be vi...
simulate background-size:cover on or
... that it doesn't handle scaling correctly. If the surrounding element is smaller than the video file, it isn't scaled down. Even if you give the video tag a tiny initial size, like 16px by 9px, auto ends up forcing it to a minimum of its native file-size. With the current top-voted solution on this ...
How to use Oracle ORDER BY and ROWNUM correctly?
...return "1" in the last column. You would need to list the columns individually to avoid this.
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Best way to make Java's modulus behave like it should with negative numbers?
... b) would become larger than b. Therefore, (a % b + b) % b turns it into smaller than b again (and doesn't affect negative a values).
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Get records with max value for each group of grouped SQL results
..., age desc, Person) x
group by `Group`
This works because in mysql you're allowed to not aggregate non-group-by columns, in which case mysql just returns the first row. The solution is to first order the data such that for each group the row you want is first, then group by the columns you want the...
REST Complex/Composite/Nested Resources [closed]
...our specific case of the covers is slightly more complex in that a cover really does require a comic book, and visa versa.
However, if you consider an email message as a resource, and the from address as a child resource, you can obviously still reference the from address separately. For example, g...
Is there a CSS selector for the first direct child only?
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What you posted literally means "Find any divs that are inside of section divs and are the first child of their parent." The sub contains one tag that matches that description.
It is unclear to me whether you want both children of the main div o...
Android disable screen timeout while app is running
...an create a baseActivity and write this code in onCreate Method and extend all activity from baseActivity.
– maryam
Apr 16 '19 at 16:30
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