On Thu, Jan 21, 2016 at 12:00 PM, Aaron Baugher <aa...@baugher.biz> wrote: > Tom Browder <tom.brow...@gmail.com> writes: ... >> For the example Perl 5 input I like the Blue_Tiger translation, except >> I haven't so far found an description of the '<->' operator. Why >> would Blue_Tiger prefer it to the '->' operator which I've seen in all >> the examples I can remember seeing? > > In Perl 5, the loop variable ($c) is an alias into the array, and changing > its value changes the the value in the array. In Perl 6, the array being > worked on is read-only by default, so in the Perl::ToPerl6 example, trying to > change the value of $c inside the loop would throw an error. Using the <-> > operator (also pointing back from the loop variable to the array) tells it to > use the Perl 5 behavior, where the array can be changed by changing the loop > variable.
Thanks, Aaron, good explanation. But can you find a description of '<->' in the Perl 6 docs? I did a search here https://raw.githubusercontent.com/perl6/mu/master/docs/Perl6/Cheatsheet/cheatsheet.txt here https://doc.perl6.org/language/operators and here: https://doc.perl6.org/language.html and couldn't find it. Cheers! -Tom
