ansaurus

Question

Hex to binary in ruby

Answer 1

A:

(0..4).map { |x| "0x%X" % (("1234567890".to_i(16) >> 8 * x) & 255) }.reverse

Kevin Peterson 2009-05-14 08:25:48

Answer 2

A:

You might find it helpful to take a look here at this post

Izabela 2009-05-14 08:27:16

Answer 3

+1 A:

If you have a string containing numbers and you want to scan each as a numeric hex byte, I think this is what you want:

"1234567890".scan(/\d\d/).map {|num| Integer("0x#{num}")}

Chuck 2009-05-14 08:27:50

I'd have done: "1234567890".scan(/\d\d/).map {|i| i.to_i(16) }

Greg 2010-03-23 09:05:01

Answer 4

+1 A:

Code -

hex_string.to_a.pack('H*')

Vikrant Chaudhary 2010-03-23 04:20:08

File.open('output.txt', 'w+') {|f| f.write(IO.read('input.txt').to_a.pack('H*')) }

neoneye 2010-06-24 14:47:33

Hex to binary in ruby