我遇到了这个,期待它是$@的拼写错误：
use strict;
use warnings;
eval {
my $error = Not::Here->new();
};
warn @$;
令我惊讶的是它输出了这个：
Can’t locate object method “new” via package “Not::Here” (perhaps you forgot to load “Not::Here”?) at dollar_array.pl line 6.
…caught at dollar_array.pl line 9.
解决方法@H_403_17@
@ $在Perl中没有任何意义.它的存在是因为$$存在(对于每个特殊变量“sigil-char”,所有其他“another_sigil-char”变量都存在).因此,warn没有任何参数 – 你可以通过使用just war来验证; – 你会得到相同的输出.
现在,让我们阅读warn的文档：
If the output is empty and $@ already contains a value (typically from a prevIoUs eval) that value is used after appending "\t...caught" to $@. This is useful for staying almost,but not entirely similar to die.
$@包含eval中的异常,因此预期会出现这种情况.
现在,让我们阅读warn的文档：
If the output is empty and
$@already contains a value (typically from a prevIoUs eval) that value is used after appending"\t...caught"to$@. This is useful for staying almost,but not entirely similar todie.
$@包含eval中的异常,因此预期会出现这种情况.