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help for safedrop
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Drop variables if and only if varnames specified in full 

        safedrop namelist


Description

    safedrop drops the variable(s) named in namelist if and only if every
    element of namelist is a fully spelled out variable name.


Remarks

    Suppose (1) you want to drop variable myvar if and only if that variable
    exists with exactly that name; (2) there is just one variable in your
    dataset whose name begins with myvar, namely myvariable.  As myvar is an
    unambiguous abbreviation of myvariable, both drop myvar and capture drop
    myvar will cause myvariable to be dropped. safedrop myvar is a way to
    ensure that this does not happen.


Examples

    . safedrop myvar

    . safedrop myvar yourvar


Author

    Nicholas J. Cox
    n.j.cox@durham.ac.uk


Also see