I have long lines of the format 
name1=value1 name2=value2 ...

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Problem is, the notation of value is not consistent. It can be scientific, decimal or can use m,M,p etc. I need them to be consistent for later use. This is what I did 
sub exp {
    #Change all numbers in string to exponental 
    #string has name=value pairs
    my ($string) = @_;

    for ($string) {
        s/\dT\s/e12/g;
        s/\dG\s/e9/g;
        s/\dM\s/e6/g;
        s/\dK\s/e3/g;
        s/\dm\s/e-3/g;
        s/\du\s/e-6/g;
        s/\dp\s/e-12/g;
        s/\df\s/e-15/g;
        s/\dn\s/e-9/g;
        s/=(\S+)\s/sprintf("=%e ",$1)/e;
    }
    return ($string);
}

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I am wondering if there is a better way to do the operation. It seems wasteful that I read the string again and again for each search and replace.

In reply to Doing multiple search and replace operations on a string by letssee

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