Untitled
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| Language | Perl |
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| Owner | w3xue |
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| Modified | |
| Visibility | Public |
#!/usr/bin/perl
%data = ('google'=>'google.com', 'W3xue'=>'w3xue.com', 'taobao'=>'taobao.com');
if( exists($data{'facebook'} ) ){
print "facebook 的网址为 $data{'facebook'} \n";
}
else
{
print "facebook 键不存在\n";
}
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