[jira] [Commented] (GROOVY-9272) Support switch expression

["Daniel Sun (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/GROOVY-9272?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17386683#comment-17386683 ] 

Daniel Sun commented on GROOVY-9272:
------------------------------------

{code:java}
int eval(Expr n) {
     return switch(n) {
         case IntExpr(int i) -> i;
         case NegExpr(Expr n) -> -eval(n);
         case AddExpr(Expr left, Expr right) -> eval(left) + eval(right);
         case MulExpr(Expr left, Expr right) -> eval(left) * eval(right);
         default -> throw new IllegalStateException();
     };
}
{code}

[~paulk]
Destructuring is supported now:
https://github.com/apache/groovy/commit/8424d3a1258059587f955ccd5f771a4aa2ca5db2

> Support switch expression
> -------------------------
>
>                 Key: GROOVY-9272
>                 URL: https://issues.apache.org/jira/browse/GROOVY-9272
>             Project: Groovy
>          Issue Type: New Feature
>            Reporter: Daniel Sun
>            Assignee: Daniel Sun
>            Priority: Major
>             Fix For: 4.0.0-beta-1
>
>          Time Spent: 1.5h
>  Remaining Estimate: 0h
>
> See JEP 361( [https://openjdk.java.net/jeps/361] )
>  
> The following references are a bit outdated:
>  JEP 354( [https://openjdk.java.net/jeps/354] )
> JEP 325( [https://openjdk.java.net/jeps/325] )
> [https://blog.codefx.org/java/switch-expressions/]
> [https://dzone.com/articles/jdk-12-switch-statementsexpressions-in-action]
> [https://blog.idrsolutions.com/2019/03/java-12-switch-expressions-explained-in-5-minutes/]
>  



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