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Why do I need Transaction in Hibernate for read-only operations?
...ction (though sometimes it is reasonable to tune the isolation level, it's best not to do that to start out with); if you never write to the DB during your transaction, both committing and rolling back the transaction work out to be the same (and very cheap).
Now, if you're lucky and your queries a...
Android: Difference between Parcelable and Serializable?
..., meaning that there is no method to implement, Java will simply do its best effort to serialize it efficiently.
The problem with this approach is that reflection is used and it is a slow process. This mechanism also tends to create a lot of temporary objects and cause quite a bit of garbage c...
How dangerous is it to access an array out of bounds?
... diagnostic message).
So that's the theory. What's the reality?
In the "best" case, you'll access some piece of memory that's either owned by your currently running program (which might cause your program to misbehave), or that's not owned by your currently running program (which will probably ca...
Does JavaScript have “Short-circuit” evaluation?
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This is the best "great answer that doesn't explicitly answer the question" that I've ever seen...
– Gerardo Furtado
Jun 21 '19 at 9:38
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How are zlib, gzip and zip related? What do they have in common and how are they different?
...ftware engineer, and has been heavily involved in space exploration. He is best known for his work in the field of data compression as the author of the Adler-32 checksum function, and a co-author of the zlib compression library and gzip. He has contributed to Info-ZIP, and has participated in devel...
Converting an array of objects to ActiveRecord::Relation
...cord::Relation for example take out not completed elements. In those cases best is to use scope elements.not_finished and you would still keep ActiveRecord::Relation.
But sometimes that condition is more complex. Take out all elements that are not finished, and that has been produced in the last 4...
What is the “owning side” in an ORM mapping?
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The best answer i find that explains the Doctrine 'mappedBy' +'inversedBy'.
– Kurt Zhong
Jul 7 '14 at 6:18
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Are there disadvantages to using a generic varchar(255) for all text-based fields?
... of VARCHAR(255) columns that in practice stored very short strings.
It's best to define the column based on the type of data that you intend to store. It has benefits to enforce application-related constraints, as other folks have mentioned. But it has the physical benefits to avoid the memory w...
Difference between / and /* in servlet mapping url pattern
...In case you actually intend to have a front controller servlet, then you'd best map it on a more specific URL pattern like *.html, *.do, /pages/*, /app/*, etc. You can hide away the front controller URL pattern and cover static resources on a common URL pattern like /resources/*, /static/*, etc with...
Is there a way to crack the password on an Excel VBA Project?
...Looking for 64 bit version? See this answer
How it works
I will try my best to explain how it works - please excuse my English.
The VBE will call a system function to create the password dialog box.
If user enters the right password and click OK, this function returns 1. If user enters the wro...