Hi,
can someone please explain the $_ in the bottom?
I am trying to get a better understanding of grep and
below $_ seems to be bit hard to understand
Does $_ iterate over and over for @skipper so that it will evauluate like below
preserver eq blue_shirt
preserver eq hat
preserver eq jacket
preserver eq perserver ==> returns 1
I was thinking since it was iterating over @required , I thought $_ would be from @required.
but I am guessing since grep does expression, $_ becomes from @skipper?
my @required = qw(preserver sunscreen water_bottle jacket);
my @skipper = qw(blue_shirt hat jacket preserver sunscreen);
for my $item (@required) {
unless (grep $item eq $_, @skipper) { # not found in list?
print "skipper is missing $item.\n";
}
}
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