Radix is a very easy to use Ruby library for converting numbers to and from any base. It supports both Integer, Float and Rational numbers, as well as representational string-notations that need not be in ASCII order.
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Convert to and from any base.
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Convert Integers, Floats and Rational numbers.
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Define custom encoding and character sets.
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Can be used to encode/decode bytecode strings.
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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, 10] (ie. 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.
To install with RubyGems simply open a console and type:
$ gem install radix
Radix follows Ruby Setup package standard.
Copyright © 2009 Thomas Sawyer
This program is distributed under the terms of the Apache 2.0 license.
See LICENSE file for details.