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How do ACID and database transactions work?
What is the relationship between ACID and database transaction?
8 Answers
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Difference between a SOAP message and a WSDL?
I am confused about how SOAP messages and WSDL fit together? I have started looking into SOAP messages such as:
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How to use Servlets and Ajax?
I'm very new to web apps and Servlets and I have the following question:
7 Answers
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Why would you use an ivar?
...is question asked the other way, such as Must every ivar be a property? (and I like bbum's answer to this Q).
7 Answers
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When to use nested classes and classes nested in modules?
I'm pretty familiar with when to use subclasses and modules, but more recently I've been seeing nested classes like this:
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How should equals and hashcode be implemented when using JPA and Hibernate
How should model class's equals and hashcode be implemented in Hibernate? What are the common pitfalls? Is the default implementation good enough for most cases? Is there any sense to use business keys?
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Differences between git remote update and fetch?
...etch Documentation/RelNotes/* | less
Then I did a less search for --all, and this is what I found under the release notes for Git version 1.6.6:
git fetch learned --all and --multiple options, to run fetch from many repositories, and --prune option to remove remote tracking branches that went ...
When should I use a composite index?
..._C )
will benefit a query that uses those fields for joining, filtering, and sometimes selecting. It will also benefit queries that use left-most subsets of columns in that composite. So the above index will also satisfy queries that need
index( column_A, column_B, column_C )
index( column_A, col...
Do you put unit tests in same project or another project?
...s. Having an extra project (or 10) isn't a con.
Edit: More Info On Build and Shipping
I would further recommend that any automated build process place production and unit tests into different locations. Ideally, the unit test build process only runs if the production code builds, and copies the ...
StringIO in Python3
I am using Python 3.2.1 and I can't import the StringIO module. I use
io.StringIO and it works, but I can't use it with numpy 's genfromtxt like this:
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