# New Ticket Created by Francesco Rivetti
# Please include the string: [perl #77074]
# in the subject line of all future correspondence about this issue.
# <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=77074 >
map-ed items are rw and map results are lazy, but the "lazy thing" is
bound only to the output:
my @in = 1..4;
my @out := @in.map({$_*=10;});
say @in[1]; # expected 20, got 2
say @out[2]; # expected 30, got 30
say @in[1]; # got 20 now but may depend on implementation i think
personally i expected that -- with the introduction of rw trait on
blocks -- for and map aren't aliasing anymore by default
