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https://issues.apache.org/jira/browse/JEXL-398?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Henri Biestro updated JEXL-398:
-------------------------------
Description:
Allowing trailing commas in structured literals (array, set, map) as a
convenient syntactic leniency. :)
{code:java}
let m = { "foo": 1, "bar": 2, };
let a = [ 1, 2, ];
let s = (1, 2, );{code}
Using a trailing ellipsis (...) to alter the concrete class materialized as a
convenient semantic shortcut.
{code:java}
let m = { "foo": 1, "bar": 2, ... }; // LinkedHashMap
let a = [ 1, 2, ...]; // ArrayList
let s = (1, 2, ...); // LinkedHashSet{code}
was:
For example,
{code:java}
let m = {
"foo": 1,
"bar": 2,
}{code}
It fails because there is a comma after last entry `"bar": 2`, do we have any
plan to support it?
Thanks!
Summary: Allow 'trailing commas' or ellipsis while defining array, map
and set literals (was: Allow 'trailing commas' while defining array, map and
set literals)
> Allow 'trailing commas' or ellipsis while defining array, map and set literals
> ------------------------------------------------------------------------------
>
> Key: JEXL-398
> URL: https://issues.apache.org/jira/browse/JEXL-398
> Project: Commons JEXL
> Issue Type: New Feature
> Affects Versions: 3.3
> Reporter: Xu Pengcheng
> Assignee: Henri Biestro
> Priority: Minor
>
> Allowing trailing commas in structured literals (array, set, map) as a
> convenient syntactic leniency. :)
> {code:java}
> let m = { "foo": 1, "bar": 2, };
> let a = [ 1, 2, ];
> let s = (1, 2, );{code}
> Using a trailing ellipsis (...) to alter the concrete class materialized as a
> convenient semantic shortcut.
> {code:java}
> let m = { "foo": 1, "bar": 2, ... }; // LinkedHashMap
> let a = [ 1, 2, ...]; // ArrayList
> let s = (1, 2, ...); // LinkedHashSet{code}
>
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