It's actually very easy to get the interpreter to reject @a->[3] - I'm not sure how the rumour that it's hard began. I wrote a very simple patch, which is in bleadperl, to deprecate that usage:

[robin@penderel perl@12959]$ ./perl -we '@x->[2]'
Using an array as a reference is deprecated at -e line 1.

In reply to Re: Re: Potential Ternary Operator Bug by robin
in thread Potential Ternary Operator Bug by davorg

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