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From: Robert Klemme <shortcutter@googlemail.com>
Newsgroups: comp.lang.java.programmer
Subject: Re: refactoring problem
Date: Sun, 03 Feb 2013 21:38:27 +0100
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On 03.02.2013 19:50, Peter Duniho wrote:
> On Sun, 03 Feb 2013 13:32:08 -0500, Arne Vajh=F8j wrote:
>
>> [...]
>>>> (int a; double b; String c) =3D multiReturnValueMethod();
>>>>
>>>> sure does look funky!
>>>
>>> Perl does it.
>>
>> How do I phrase this to avoid a language war.
>>
>> Hm.
>>
>> Perl is not designed to make it difficult to write funky code.

Well put, Arne! ;-)

> On the other hand, F# is designed that way and it supports tuple return=

> values as well.
>
> I doubt we'll ever see the feature in C-based languages like Java and C=
#,
> but there are other languages that support it, and in at least some of
> those examples, they do it gracefully.

If you want a language that does it gracefully and runs on the JVM you=20
can pick JRuby.

> That said, it seems perfectly fine to me in Java to declare a container=

> type to allow multiple values to be returned. It's a common enough idio=
m
> and works well.

Absolutely!

And if it was as easy as in (J)Ruby to declare a simple data container=20
class it would even be convenient.

# Ruby (without final though)
FooBar =3D Struct.new :name, :length, :color

// Java
public struct FooBar {
   final String name;
   int length;
   Color color;
}

could generate

public class FooBar {
   private final String name;
   private int length;
   private Color color;

   public(String name) {
     this.name =3D name;
   }

   public(String name, int length, Color color) {
     this.name =3D name;
     this.length =3D length;
     this.color =3D color;
   }

   public String getName() { return name; }
   // ...

   @Override
   public int hashCode() {...}

   @Override
   public boolean equals(Object o) {...}

}

Cheers

	robert

--=20
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/