Radix) is a very easy to use Ruby library for converting numbers to and from any base. It supports Integer, Float and Rational numbers, as well as representational string-notations that need not be in ASCII order.
- Convert to and from any base.
- Convert Integer, Float and Rational numbers.
- Define custom encodings and character sets.
- Can be used to encode/decode bytecode strings.
- Very intuitive API.
Base conversions with ASCII ordered notations are easy in Ruby.
255.to_s(16) #=> "FF" "FF".to_i(16) #=> 255
But Ruby reaches it's limit at base 36.
255.to_s(37) #=> Error
Radix provides the means of converting to and from any base.
For example, a number in base 256 can be represented by the array
100**256 + 10**1) and can be convert to base 10.
[100,10].b(256).to_a(10) #=> [2,5,6,1,0]
Or, to get a string representation for any base up to 62.
[100,10].b(256).to_s(10) #=> "25610"
A string representation of a number can be converted too, again, up to base 62.
"10".b(62).to_s(10) #=> "62"
To use a custom character set, use an array of characters as the base rather than an integer. For example we can convert a base 10 number to another base 10 number using a different encoding.
base = [:Q, :W, :E, :R, :T, :Y, :U, :I, :O, :U] "10".b(10).to_a(base) #=> [:W, :Q]
To learn more have a look at the QED Demo.
If using Bundler, then add the ususal gem entry to your project's Gemfile.
To install with RubyGems simply open a console and type:
$ gem install radix
Radix follows Ruby Setup package standard so it can also be installed in an FHS compliant manner using setup.rb (very old-school and no longer recommeded).
Special thanks to douglascodes for taking the time to fully document Radix's API. Documentation is an under-addressed and time-consuming affair, so your contribution is greatly appreciated. Thank you, Douglas!
Copyright (c) 2009 Rubyworks
This program is distributable in accordance with the BSD-2-Clause license.
See LICENSE.txt for details.