Meta technique, that allows to pospone the setting of the dependable type to the runtime.
17
votes
1answer
1k views
Java: “Heap pollution”
A "Heap Pollution" as in Non-Reifiable Types (The Java™ Tutorials > Learning the Java Language > Generics (Updated))
Why is it called that way?
12
votes
7answers
718 views
How to spread awareness for generic programming among team members?
I am staying in an environment, where people believe:
Java generics are the feature exclusively used for library writing
and not for the real coding.
C++ is an OO programming language; template is ...
10
votes
2answers
437 views
Scala as a language for Generic Programming
In the paper “An Extended Comparative Study of Language Support for Generic Programming” by Garcia et al. an interesting comparison of programming languages features for generic programming is given:
...
9
votes
3answers
561 views
Why should we preferably use first class collections?
As per rule number 4 of Object Calisthenics by Jeff Bay (RTF) in The ThoughtWorks Anthology, it is recommended that one should "Use first-class collections".
Rule 4: First class collections
...
8
votes
3answers
715 views
generic programming, how often is it used in industry
I do programming in an academic setting at the moment, so I can use whatever I want. I'm using the boost graph library for a few things, and I'm wondering whether investing effort in understanding GP ...
6
votes
5answers
1k views
What's a good naming convention for generic types in C#? [closed]
I decided to ask this question here instead of on stack overflow because it is rather subjective.
In C#, typically I see generic types with very poor names. Specifically, "T" is commonly used but is ...
6
votes
3answers
2k views
Who extends interfaces? And why?
AFAIK, my class extends parent classes and implements interfaces. But I run across a situation, where I can't use implements SomeInterface. It is the declaration of a generic types. For example:
...
6
votes
4answers
229 views
Do functional generics exist and what is the correct name for them if they do?
Consider the following generic class:
public class EntityChangeInfo<EntityType,TEntityKey>
{
ChangeTypeEnum ChangeType {get;}
TEntityKeyType EntityKey {get;}
}
Here EntityType ...
6
votes
1answer
261 views
Why prefer a wildcard to a type discriminator in a Java API (Re: Effective Java)
In the generics section of Bloch's Effective Java (which handily is the "free" chapter available to all: http://java.sun.com/docs/books/effective/generics.pdf), he says:
If a type parameter ...
5
votes
2answers
3k views
Difference between various Collection Generic Interfaces in C#
I have been playing around with C# for Windows and ASP.net MVC development for some time now. Some, might argue this as lame question but I am trying to understand the basic difference and performance ...
5
votes
1answer
233 views
Why can't java generics be in arrays?
Why is it that when I try to make an array of ArrayLists: ArrayList<Integer>[] arr=new ArrayList<Integer>[40]; there is an error and java does not allow this?
Is there a reason related to ...
5
votes
1answer
207 views
Why do generics in Scala have erased types, and are not reifiable?
Why do generics in Scala have erased types, and are not reifiable?
Is it due to lack of support from the JVM or for compatibility with Java libraries?
What are the advantages in general of having ...
5
votes
3answers
389 views
Why don’t UI frameworks use generics?
One way of looking at type safety is that it adds automatic tests all over your code that stop some things breaking in some ways. One of the tools that helps this in .NET is generics.
However, both ...
4
votes
3answers
204 views
generic programming- where did it originate?
Im trying to work out if generic programming was a functional programming feature which was then introduced into Java, C++ and C# or did the latter copy it from the functional programming languages ...
4
votes
2answers
274 views
Java Generics - how to strike a balance between expressiveness and simplicity
I'm developing some code that utilizes generics, and one of my guiding principles was to make it usable for future scenarios, and not just today's. However, several coworkers have expressed that I may ...
