[jira] [Commented] (GROOVY-11636) Create a SGM#next which also takes an integer increment value

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/GROOVY-11636?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17946936#comment-17946936 ] 

ASF GitHub Bot commented on GROOVY-11636:
-----------------------------------------

paulk-asert opened a new pull request, #2204:
URL: https://github.com/apache/groovy/pull/2204

   …crement value




> Create a SGM#next which also takes an integer increment value
> -------------------------------------------------------------
>
>                 Key: GROOVY-11636
>                 URL: https://issues.apache.org/jira/browse/GROOVY-11636
>             Project: Groovy
>          Issue Type: New Feature
>            Reporter: Paul King
>            Assignee: Paul King
>            Priority: Major
>
> Trying to get from String 'a' to 'e' by "adding 4" can be cumbersome, either calling next() multiple times, or converting to a char, doing the arithmetic, then converting back.
> The idea would be to support:
> {code:groovy}
> assert 'a'.next(0) == 'a'
> assert 'a'.next(4) == 'e'
> assert 'a'.next(0) == 'a'
> assert 'a'.next(25) == 'z'
> assert 'A'.next(32) == 'a'
> assert (0..4).collect('a'::next) == 'a'..'e'
> assert 'car'.next(2) == 'cat'
> {code}
> Although hopefully never used, this piggybacks on the normal next() wrapping behavior if Character.MAX_VALUE is reached. And also, like next(), applies the the last character in a longer String as per last test above.



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