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Date: Sat, 26 Jul 2014 09:49:40 +0000 (UTC)
From: "Benedikt Ritter (JIRA)" <jira@apache.org>
To: issues@commons.apache.org
Message-ID: <JIRA.12727456.1405455604571.50454.1406368180250@arcas>
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Subject: [jira] [Commented] (LANG-1030) StringUtils.same opposite method to
 StringUtils.differ
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    [ https://issues.apache.org/jira/browse/LANG-1030?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14075318#comment-14075318 ] 

Benedikt Ritter commented on LANG-1030:
---------------------------------------

bq. Should we use the "review patch" label in cases where we don't have a full patch (with tests) attached to the issue?

it's more like Discussion :)


> StringUtils.same opposite method to StringUtils.differ
> ------------------------------------------------------
>
>                 Key: LANG-1030
>                 URL: https://issues.apache.org/jira/browse/LANG-1030
>             Project: Commons Lang
>          Issue Type: Improvement
>    Affects Versions: 3.3.2
>            Reporter: Michael Bazos
>            Priority: Trivial
>              Labels: StringUtils
>             Fix For: Review Patch, Discussion
>
>
> This is pretty easy to do but I have seen this come up and was surprised to find that StringUtils didn't have a utility method.
> The difference() method is described as doing the following:
> Compares two Strings, and returns the portion where they differ.
> What I am proposing is essentially the opposite of the difference method called same().  This method would compare two String and return a new String when they are the same.
> This is essentially the implementation:
> {code:java}
>     public static String same(String str1, String str2) {
>         if (str1 != null && StringUtils.equalsIgnoreCase(str1, str2)) {
>             return new String(str1);
>         }
>         return null;
>     }
> {code}
> {code:java}
> StringUtils.same(null, null) = null
> StringUtils.same("", "") = "";
> StringUtils.same("123", "") = null
> StringUtils.same("123", "123") = "123";
> {code}
> If there is already a way to do this using the apache lang library please point me in the right direction.  Otherwise I would be more than happy to do the testing, coding and documentation for this.


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