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Programming > Java Help > Re: return a Co...
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Re: return a Collection (Set or List)

by Eric Sosman <Eric.Sosman@[EMAIL PROTECTED] > May 13, 2008 at 04:13 PM

Roedy Green wrote:
> On Tue, 13 May 2008 11:37:53 -0700, Mark Space
> <markspace@[EMAIL PROTECTED]
> wrote, quoted or indirectly quoted someone
> who said :
> 
>> Consider substituting two methods for this one.  "getAsList" and 
>> "getAsSet" Then the caller can indicate which type is desired and
always 
>> receive the correct type.
> 
> If it is always possible to get as List, why would you ever return
> anything else?  You can always use a List as a Set.

	String[] words = { "The", "thing", "about", "Sets",
	    "is", "that", "each", "item", "is", "present",
	    "once", "and", "once", "only." };
	List<String> list = new ArrayList<String>();
	Set<String> set = new HashSet<String>();
	for (String w : words) {
	    list.add(w);
	    set.add(w);
	}
	assert list.size() == words.length;
	assert set.size() == words.length;  // BZZZZT!

-- 
Eric.Sosman@[EMAIL PROTECTED]

 




 11 Posts in Topic:
return a Collection (Set or List)
thufir <hawat.thufir@[  2008-05-13 11:29:57 
Re: return a Collection (Set or List)
Lew <lew@[EMAIL PROTEC  2008-05-13 08:18:51 
Re: return a Collection (Set or List)
Roedy Green <see_websi  2008-05-13 12:40:58 
Re: return a Collection (Set or List)
Mark Space <markspace@  2008-05-13 11:37:53 
Re: return a Collection (Set or List)
Roedy Green <see_websi  2008-05-13 19:39:07 
Re: return a Collection (Set or List)
Eric Sosman <Eric.Sosm  2008-05-13 16:13:07 
Re: return a Collection (Set or List)
Lew <lew@[EMAIL PROTEC  2008-05-13 19:41:37 
Re: return a Collection (Set or List)
Roedy Green <see_websi  2008-05-14 08:22:59 
Re: return a Collection (Set or List)
thufir <hawat.thufir@[  2008-05-13 22:38:12 
Re: return a Collection (Set or List)
RedGrittyBrick <RedGri  2008-05-14 10:27:23 
Re: return a Collection (Set or List)
Lew <lew@[EMAIL PROTEC  2008-05-14 08:07:30 

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tan12V112 Wed Dec 3 14:58:15 CST 2008.