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When should I use Struct vs. OpenStruct?
In general, what are the advantages and disadvantages of using an OpenStruct as compared to a Struct? What type of general use-cases would fit each of these?
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How to generate a random int in C?
Is there a function to generate a random int number in C? Or will I have to use a third party library?
27 Answers
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Does adding a duplicate value to a HashSet/HashMap replace the previous value
Please consider the below piece of code:
8 Answers
8
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The JPA hashCode() / equals() dilemma
There have been some discussions here about JPA entities and which hashCode() / equals() implementation should be used for JPA entity classes. Most (if not all) of them depend on Hibernate, but I'd like to discuss them JPA-implementation-neutrally (I am using EclipseLink, by the way).
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Cannot delete directory with Directory.Delete(path, true)
I'm using .NET 3.5, trying to recursively delete a directory using:
30 Answers
30
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How should the ViewModel close the form?
I'm trying to learn WPF and the MVVM problem, but have hit a snag.
This question is similar but not quite the same as this one (handling-dialogs-in-wpf-with-mvvm) ...
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What is the “N+1 selects problem” in ORM (Object-Relational Mapping)?
The "N+1 selects problem" is generally stated as a problem in Object-Relational mapping (ORM) discussions, and I understand that it has something to do with having to make a lot of database queries for something that seems simple in the object world.
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INNER JOIN ON vs WHERE clause
For simplicity, assume all relevant fields are NOT NULL .
11 Answers
11
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How do you create a hidden div that doesn't create a line break or horizontal space?
I want to have a hidden checkbox that doesn't take up any space on the screen.
10 Answers
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Java Multiple Inheritance
In an attempt to fully understand how to solve Java's multiple inheritance problems I have a classic question that I need clarified.
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