> $ calar
> @rray
>％灰分

Matt Trout写了一个伟大的评论关于Perl sigils blog.fogus.me有用的，所以有粘贴下面：

Actually,perl sigils don’t denote variable type – they denote conjugation – $ is ‘the’,@ is
‘these’,% is ‘map of’ or so – variable type is denoted via [] or {}. You can see this with:

my $foo = 'foo';
    my @foo = ('zero','one','two');
    my $second_foo = $foo[1];
    my @first_and_third_foos = @foo[0,2];
    my %foo = (key1 => 'value1',key2 => 'value2',key3 => 'value3');
    my $key2_foo = $foo{key2};
    my ($key1_foo,$key3_foo) = @foo{'key1','key3'};

so looking at the sigil when skimming perl code tells you what you’re going to -get- rather
than what you’re operating on,pretty much.

This is,admittedly,really confusing until you get used to it,but once you -are- used to it
it can be an extremely useful tool for absorbing information while skimming code.

You’re still perfectly entitled to hate it,of course,but it’s an interesting concept and I
figure you might prefer to hate what’s -actually- going on rather than what you thought was
going on 原文链接：https://www.f2er.com/Perl/173322.html