Advanced pack() programming in 24 seconds

Chapter 1. Creating an Excel file

An Excel file is comprised of:

• bytes

    pack "C", 123;

• Two byte little-endian shorts

    pack "v", 123;

• Four byte little-endian longs

    pack "V", 123;

• Eight byte IEEE 754 doubles

                   pack "d", 123; # Sometimes

    scalar reverse pack "d", 123; # Other times

    something_harder();           # < 1% of the time

• And don't forget binmode()