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Perl???????????????????????????????????????????????????????????

??????????????????????????????????????????????????????????????

my $x = 2;
my @array = (1, 2, 3);
my $flag = 0;
for (@array) {
    if ($x == $_) {
        $flag = 1;
    }
}
if ($flag == 1) {
    print "$x is in the array;";
} else {
    print "$x is not in the array;";
}

?????????????????

my $x = 2;
my @array;
if (@array~~$x) {
    print "$x is in the array;";
} else {
    print "$x is in the array;";
}

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'hello'~~{hello => 1, world => 2}

??? true?????????????

???????????Perl????????????????????????????

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