rin

Rin: Inspects Ruby Integers

Change the base that numbers display with in Ruby.

The executable

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 a Ruby commandline script

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

Polite Ruby script

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"

Invasive Ruby script

But less annoying to use

15 # => 15

rin.hex!
15 # => 0xF

rin.dec!
15 # => 15

Other things that could be fun

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