Dmitri Blinov created JEXL-266:
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             Summary: Allow to remove an element from iterator collection 
within for-loops
                 Key: JEXL-266
                 URL: https://issues.apache.org/jira/browse/JEXL-266
             Project: Commons JEXL
          Issue Type: New Feature
    Affects Versions: 3.1
         Environment: I have created a patch as initial implementation for this 
new feature, please see github pull request here 
[pr#5|https://github.com/apache/commons-jexl/pull/5]. I whould be very grateful 
if this could be interesting for the community and included in master branch. 
Thanks in advance!
            Reporter: Dmitri Blinov


The for-loop in JEXL provides a convenient way to iterate over different types 
of collections, however, its not possible for a script writer to utilize 
underlying
{code:java}
iterator.remove(){code}
method within such a loop. The proposal is to introduce new {{remove}} 
statement which should be used within for-loops and should internally call 
{{iterator.remove()}} method and skip the loop to the next element;

For example, the following code should remove items {{1,2,3}} from set and 
return value {{3}}.
{code:java}
var set = {1,2,3,4,5,6}; for (var item : set) if (item <= 3) remove; return 
size(set)
{code}




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