Unexpected variable ... is already defined ...

[Denis DEBARBIEUX]

>> If yes, can the inner function (that does the test) use the outer
>> parameter event?
> yes, you can capture the value of parameters and local variables if they
> are effectively final (not assigned more than once).

Thanks for your help.

How can you set that the value of a parameter is /final/?

/getStream().map(//final//event -> event.matchIfA(//_event//-> 
"a".equals(//_event//.label))).forEach(System.out::println);/
does not compile.

According to my tests, they are not final by default.

Denis