Hi,
there is a clause in perl program which assigns two variables with values from a file.



my ($t, undef, $i)=/t: ((\d|\.)+)\s.*?i=((\d|\.)+)/;


What does "undef" mean in the above clause?

Which value will be assigned to $t and $i? in the place \d? or some value?

Thanks,

Wenpeng

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