A few times I've wanted to have safe index.
Sounds like a good idea.

On Tue, Nov 8, 2016 at 5:08 PM, Daniel Sun <realbluesun@hotmail.com> wrote:
Hi all,

      The new parser supports safe index now, which is proposed by Paul King

      Here are some example code:

assert null == null?[1];
assert null == null?[1]?[1, 2];
assert null == null?[1]?[1, 2]?[1, 2, 3];

def a = null;
assert null == a?[1, 2];

def f() {return null}
assert null == f()?[1];

       More information can be found at the safeIndex branch of

       Any thoughts?

       BTW, the antlr4 branch of apache/groovy is very old, I am going to
try to update it with the master.


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Guillaume Laforge
Apache Groovy committer & PMC Vice-President
Developer Advocate @ Google Cloud Platform