If you can guarantee methodfunction() will not return either "0", 0, or the empty string "", then you can do:
    { rollback( methodfunction() || last ) }

[download]
But seriously, declaring a variable up-front
    my $variable = methodfunction();
    rollback($variable) if defined $variable;

[download]
is a good thing because it is clear.

In reply to Re: how to return info from functions by repellent
in thread how to return info from functions by chuckd

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