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Montaque 2003-04-27
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这样判断比如:
public Class cTest
end class
dim c as cTest
msgbox (c is nothing) '这时候,没有实例化是true
dim c as new cTest
msgbox (c is nothing) '这时候,false
public Class cTest
end class
dim c as cTest
msgbox (c is nothing) '这时候,没有实例化是true
dim c as new cTest
msgbox (c is nothing) '这时候,false
