What is the benefit in using 'unset'?
在使用“撤消”的好处是什么?
For example, if you don't like grids, use unset grid.
例如,如果您不想要网格,使用unsetgrid 。
So, you might see a value of or 0.0 when the field is unset.
因此,该字段未设置时,您可能会看到值或 0.0。
Unset your variables to free memory, especially large arrays.
注销那些不用的变量尤其是大数组,以便释放内存。
Unset your variables to free memory, especially large arrays.
注销那些不必的变量尤其是大数组,以便开释内存。
If this is set, even root cannot delete the file until the attribute is unset.
设置完成后,即使是root用户也不能删除文件,直到属性解除。
If this is set, even root cannot delete the file until the attribute is unset.
设置完成后,即使是root用户也不能删除文件,直到属性解除。
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