can any one explain me what the following code do.    ($whole,$deci) = /(?:(\d*)\.?(\d+))|(?:(\d+)\.?(\d*))/;

Yes.    The pattern matches either (\d*)\.?(\d+) or (\d+)\.?(\d*).    The variable $whole is assigned the contents of the first set of capturing parentheses ((\d*) or (\d+)) and the variable $deci is assigned the contents of the second set of capturing parentheses ((\d+) or (\d*)).

Update: Thanks ikegami.    It looks like I couldn't get anything right yesterday.    :-(

In reply to Re: meaning for the code by jwkrahn
in thread meaning for the code by sanku

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