Rin: Inspects Ruby Integers

Change the base that numbers display with in Ruby.

Prints whatever the script evaluates to. Default inspect is hex.

$ rin '170 + 17'
BB

Can be told what base to use by passing the base as a flag.

$ rin -8 '7 + 7'
16

You can put whatever Ruby you want in there.

From the shell, you can require rin, and output will be set by default to hex, or to the base of the first argument to the script.

$ ruby -rin -e 'p 15'
0xF

Use in Ruby without fucking with the environment.

require 'rin'
rin.hex { 15 }  # => "0xF"
rin.oct { 15 }  # => "017"
rin.bin { 15 }  # => "0b1111"
rin.dec { 15 }  # => "15"

But less annoying to use

15 # => 15

rin.hex!
15 # => 0xF

rin.dec!
15 # => 15

But that I don't intend to do, unless I use this much.

• env var for for config:
  • preferred base
  • preferred format (eg uppercase/lowercase/whatev)
• Support Ruby's executable arguments
• Support String#to_i
• Support [1..100].map(&Rin.hex)
• It has a naive preprocessor that swaps them to the correct values. Eventually would be nice to get this:

  $ rin 'AA + 11'
  BB

  • exit statuses be meaningful eg rin 'BB == (AA + 11) exits with 0
  • 0d123 for decimal
  • Case insensitive