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Re: for :each style question

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Jim Janney wrote:
> Wanja Gayk writes:
>> newsgrou...@virtualinfinity.net says...
>>
>>> I find specific use-cases call for different approaches.  For instance, 
>>> I like the following for string concatenation:
>>> 
>>> final StringBuilder builder = new StringBuilder();
>>> 
>>> String sep = "";
>>> 
>>> for (Object o: objects) {
>>>     builder.append(sep).append(o);
>>>     sep = ", ";
>>> }
>>
>> I always preferred to do it this way:
>>
>> final StringBuilder builder = new StringBuilder();
>> final String sep = ", ";
>> for (final Object o: objects) {
>>     builder.append(o).append(sep);
>> }
>> builder.setLength(Math.max(0,builder.length()-sep.length()));
>>
>> The only drawback is that the size of the builder's internal buffer may 
>> grow unnecessarily, if the last separator crosses its current bounds, 
>> but how often does that happen and how often is it really a problem?
> 
> import org.apache.commons.lang.StringUtils;
> 
> ...
> 
> String joinedObjects = StringUtils.join(objects, ", ");
> 
> Not to go all Lew on you here,

You flatter me, sir.

> but the Apache Commons stuff is worth a second look.

... and a third, and a fourth, ...

That said, there are things in Commons that I would not, or not any longer, use, necessarily.  You don't want to use a hammer to unscrew a rivet.  But it is good to have a hammer in your toolkit when you need to pound in a nail.

-- 
Lew

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for :each style question Roedy Green <see_website@mindprod.com.invalid> - 2011-11-30 15:32 -0800
  Re: for :each style question Arne Vajhøj <arne@vajhoej.dk> - 2011-11-30 19:28 -0500
    Re: for :each style question Chris Riesbeck <Chris.Riesbeck@gmail.com> - 2011-12-05 14:28 -0600
  Re: for :each style question Knute Johnson <nospam@knutejohnson.com> - 2011-11-30 16:49 -0800
    Re: for :each style question Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2011-11-30 18:23 -0800
      Re: for :each style question Wanja Gayk <brixomatic@yahoo.com> - 2011-12-10 13:28 +0100
        Re: for :each style question Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2011-12-12 12:07 -0800
          Re: for :each style question Roedy Green <see_website@mindprod.com.invalid> - 2011-12-13 08:08 -0800
            Re: for :each style question Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2011-12-13 12:07 -0800
          Re: for :each style question Wanja Gayk <brixomatic@yahoo.com> - 2011-12-17 16:20 +0100
        Re: for :each style question Jim Janney <jjanney@shell.xmission.com> - 2011-12-14 14:31 -0700
          Re: for :each style question Lew <lewbloch@gmail.com> - 2011-12-14 16:53 -0800
            Re: for :each style question Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2011-12-15 16:16 -0800
          Re: for :each style question Wanja Gayk <brixomatic@yahoo.com> - 2011-12-17 12:31 +0100
  Re: for :each style question Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-11-30 21:35 -0500
  Re: for :each style question Lew <lewbloch@gmail.com> - 2011-11-30 19:12 -0800
  Re: for :each style question Robert Klemme <shortcutter@googlemail.com> - 2011-12-01 23:36 +0100
  Re: for :each style question Steven Simpson <ss@domain.invalid> - 2011-12-04 19:43 +0000

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