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From: Gene Wirchenko <genew@ocis.net>
Newsgroups: comp.lang.java.programmer
Subject: Re: Call by Result
Date: Fri, 10 Jun 2011 11:59:20 -0700
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On Fri, 10 Jun 2011 17:01:36 +0100, RedGrittyBrick
<RedGrittyBrick@spamweary.invalid> wrote:

>On 10/06/2011 07:03, Gene Wirchenko wrote:

[snip]

>>       I am writing a simple preprocessor.  I have a few spots where a
>> string needs to be parsed.  I want to call something like this:
>>            String ReturnString="";
>>            boolean DidItWork=GetString(ReturnString);
>>            if (!DidItWork)
>>               // too bad
>> It is not acceptable to have a special String value mean failure.  I
>> want the method to be able to return any potential string.

>I think Stephan Ram's answer is roughly what I would do.
>
>String returnString;
>Thagomizor thangomizor = new Thagomizor();
>thangomizor.thangomize();
>if (!thangomizor.didItWork()) {
>   throw new TooBadException();
>} else {
>   returnString = thangomizor.getString();
>}

     Lengthy code (compared with what it could be) to no additional
benefit.

Sincerely,

Gene Wirchenko