I’ve just released a new gem called “sizes”.
This is a very simple gem that exposes “sizeof” to Ruby to enable
checking size of primitive types like :float, :unsigned_int, and so
forth. I needed this for a parser I was writing, (I didn’t feel like
writing the whole thing in C), couldn’t find a way to do it without an
extension, and saw no reason not to publish the code afterward. 
I hope I didn’t just reinvent something that already exists in core Ruby
– but I couldn’t find it if it does, no matter how hard I Googled.
Documentation and source code:
-Colin MacKenzie IV
http://thoughtsincomputation.com
On Wed, Oct 27, 2010 at 4:17 PM, Colin M. iv
[email protected] wrote:
Documentation and source code:
GitHub - sinisterchipmunk/sizes: A very simple gem that exposes the C *sizeof* keyword to Ruby.
-Colin MacKenzie IV
http://thoughtsincomputation.com
Cool. It would be nice to add the C99 type names, like int8, uint32,
etc…
Cheers,
Ammar
On 10/27/2010 8:17 AM, Colin M. iv wrote:
Documentation and source code:
GitHub - sinisterchipmunk/sizes: A very simple gem that exposes the C *sizeof* keyword to Ruby.
I think this sort of functionality may already be available as part of
the ffi gem:
irb(main):001:0> require ‘ffi’
irb(main):002:0> FFI::TypeDefs[:int].size
=> 4
irb(main):003:0> FFI::TypeDefs[:int8].size
=> 1
irb(main):004:0> FFI::TypeDefs[:uint].size
=> 4
irb(main):005:0> FFI::TypeDefs[:int64].size
=> 8
irb(main):006:0> FFI::TypeDefs[:float].size
=> 4
-Jeremy
Cool. It would be nice to add the C99 type names, like int8,
uint32, etc…
Cheers, Ammar
Done! Just pushed v1.1 including the additional types. See the
documentation (again).
I think this sort of functionality may already be available as
part of the ffi gem:
Sweet. I knew something like this had to exist, but got tired of
googling. I spent more time looking than I did coding my own!
Thanks for the replies,
-Colin MacKenzie IV
http://thoughtsincomputation.com
@sinisterchipmnk