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Posted to issues@commons.apache.org by "Benedikt Ritter (JIRA)" <ji...@apache.org> on 2014/07/20 12:48:39 UTC
[jira] [Commented] (LANG-1030) StringUtils.same opposite method to
StringUtils.differ
[ https://issues.apache.org/jira/browse/LANG-1030?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14067880#comment-14067880 ]
Benedikt Ritter commented on LANG-1030:
---------------------------------------
What would be the result of 123 and 1234?
{code:java}
StringUtils.same("123", "1234") = "123";
{code}
> 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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