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Meaning of ~isempty()

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abc abc
abc abc 2016-7-26
编辑： Stephen23 2016-7-26
Hello, i would like to know what this expression means : ~isempty(t) where t is a vector ?
At the beginning i thought it was just to know if t is a empty vector but if remove the ~ my code doesn't work anymore. So what do you think of that ?
Thanks a lot !

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Adam
Adam 2016-7-26
编辑：Adam 2016-7-26
~ means NOT
so isempty tells you if the vector is empty and ~isempty tells you if the vector is not empty.

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