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From "Duncan Jones (JIRA)" <j...@apache.org>
Subject [jira] [Created] (LANG-1037) Join list of objects with different end separator
Date Wed, 10 Sep 2014 09:12:28 GMT
Duncan Jones created LANG-1037:
----------------------------------

             Summary: Join list of objects with different end separator
                 Key: LANG-1037
                 URL: https://issues.apache.org/jira/browse/LANG-1037
             Project: Commons Lang
          Issue Type: New Feature
          Components: lang.*
            Reporter: Duncan Jones
            Assignee: Duncan Jones
            Priority: Minor
             Fix For: Discussion


A common programming challenge is joining a list with a different separator between the final
two items. For example, joining a list with {{","}} as the primary separator but {{"and"}}
as the final separator.

I propose that we extend {{StringUtils}} with three additional methods:

{code:java}
public static String join(Iterable<?> iterable, String separator, String endSeparator)

public static String join(Object[] array, String separator, String endSeparator)

public static String join(Object[] array, String separator, String endSeparator, int startIndex,
int endIndex)
{code}

This could also be added to the other {{join}} methods for primitives, but I suspect the primary
use case will be strings and I don't suggest we pollute the class any further.

Below shows the expected pseudo output using {{","}} and {{"and"}}:

{code}
join(a) == a
join(a,b) == a and b
join(a,b,c) == a, b and c
{code}



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