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...my app. I think there are invalid profiles because of iPhone Update to 5.1 and XCode update to 4.2.2.
13 Answers
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What is the difference between DAO and Repository patterns?
What is the difference between Data Access Objects (DAO) and Repository patterns? I am developing an application using Enterprise Java Beans (EJB3), Hibernate ORM as infrastructure, and Domain-Driven Design (DDD) and Test-Driven Development (TDD) as design techniques.
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Difference between array_map, array_walk and array_filter
What exactly is the difference between array_map , array_walk and array_filter . What I could see from documentation is that you could pass a callback function to perform an action on the supplied array. But I don't seem to find any particular difference between them.
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How do ACID and database transactions work?
What is the relationship between ACID and database transaction?
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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 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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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 to use Servlets and Ajax?
I'm very new to web apps and Servlets and I have the following question:
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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).
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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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