Ruby-nuby bytes question

ruby-talk
1

Hi all,

I'd like to convert an int to a byte array in Ruby.

In C# you can do this:
byte[] b = BitConverter.GetBytes(BufferLength);

Any tips for the ruby equivalent gratefully received :slight_smile:

Thanks
Steven

2

You can use pack

irb(main):001:0> [5].pack "i*"
=> "\005\000\000\000"
irb(main):002:0> [5].pack "I*"
=> "\005\000\000\000"
irb(main):006:0> [5].pack("I*").split //
=> ["\005", "\000", "\000", "\000"]

But note also that you can treat an int as a bit vector:

irb(main):003:0> 5[2]
=> 1
irb(main):004:0> 5[3]
=> 0

HTH

    robert

···

steven.shingler@virgin.net wrote:

Hi all,

I'd like to convert an int to a byte array in Ruby.

In C# you can do this:
byte b = BitConverter.GetBytes(BufferLength);

Any tips for the ruby equivalent gratefully received :slight_smile:

3

super!
thanks robert :slight_smile: