[jira] [Commented] (JEXL-367) Deprecate -> and support =>

["Henri Biestro (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/JEXL-367?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17529610#comment-17529610 ] 

Henri Biestro commented on JEXL-367:
------------------------------------

As a mitigation, we could certainly accommodate the 'fat-arrow' vs 'arrow' as a feature; the parser can accommodate both syntaxes easily and the feature controller accommodate the check.

> Deprecate -> and support =>
> ---------------------------
>
>                 Key: JEXL-367
>                 URL: https://issues.apache.org/jira/browse/JEXL-367
>             Project: Commons JEXL
>          Issue Type: Wish
>            Reporter: Hussachai Puripunpinyo
>            Priority: Major
>
> The JEXL code surprisingly looks a lot like Javascript. I think this change is a good transition for folks to update the code, and it's pretty fine if they can tolerate using the deprecate syntax and don't mind seeing a warning log pop up every time. 
> I'd like to propose supporting => and deprecate ->.
> The reasons are
>  - JavaScript becomes very popular and many people are familiar with it.
>  - JEXL is more like for a quick short script. In many scenarios, the target audiences are not a programer. They often mistake a language as a JavaScript (from my experience).
>  - JEXL syntax already looks a lot like JavaScript
>  -- var for variable declaration (Java added in Java 10, but JavaScript supports this from the beginning)
>  -- The function keyword
>  -- Implicit type coercion
>  -- Ternary operator
> The proposed change.
>  * Support => in addition to ->
>  * Deprecate -> and show a warning log when it's used.



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