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the package chewingum contains two main programs: - base62 - chew They have been implemented in perl. Base62 has been coded in c++ too. chew has been written to shorten long decimal integer numbers into base62 strings. It's not a mere base conversion, because it doesn't use arithmetic inside its logic. In this way it can convert very long numbers into strings quickly, without overflows. For example if I want to share an id using an url, this will make the url shorter. the...

This module provides functions for conversion between binary data and ASCII base-85 encoded text as described by Adobe in the PostScript Language Reference. There is also a non‐standard mode that encodes a group of four consecutive ASCII SPACE characters as a single ‘y’ character, and omits the ‘~>’ EOD marker. Please note that this module is written in pure Perl, and is as such very slow. A better alternative is to use the MPPerl::Convert::ASCII85::XS module, in which the most time-critical...