Re: Still no typedef

From:
Lew <lew@lewscanon.com>
Newsgroups:
comp.lang.java.programmer
Date:
Wed, 05 Dec 2007 14:29:41 -0500
Message-ID:
<m-Odnf7UaYC4YcvanZ2dnUVZ_uvinZ2d@comcast.com>
Arnauld.Loyer@gmail.com wrote:

I don't think it's a debate for the best language, just that declaring
some variable using generics can be quite long.

Map<String, Container<Entity, Comparator<Entity>>> myVariable=...
Iterator<Container<Entity, Comparator<Entity>>> iterator =
myVariable.values().iterator();

suppose the definition of Entity contains also some generics :
Entity becomes Entity<Node, RendererType>

the declaration of the Iterator becomes :

Iterator<Container<Entity<Node, RendererType>, Comparator<Entity<Node,
RendererType>>>>
iterator = ...

which becomes quite long :(

using a kinf of type def :

typedef Entity<Node, RendererType> nodeEntity;


Type names should start with an upper-case letter.

typedef Container<nodeEntity, Comparator<nodeEntity>> containerEntity;

the iterator becomes :
Iterator<containerEntity> iterator = ...
shorter and more readable


public void shortcutMethod()
{
   class NodeEntity extends Entity <Node, Renderer> {}
   NodeEntity entity;
   ...
}

Only works with extendable classes, of course, and has consequences.

But why give up the documentation value of the generic types? That seems like
false economy to me.

--
Lew

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