Forum: Ruby YAML's handling of Bignum's in 1.8.4

Announcement (2017-05-07): www.ruby-forum.com is now read-only since I unfortunately do not have the time to support and maintain the forum any more. Please see rubyonrails.org/community and ruby-lang.org/en/community for other Rails- und Ruby-related community platforms.
D36eff3004b39abc4b93fe8a410d8bd3?d=identicon&s=25 Ron M (Guest)
on 2006-02-21 02:33
(Received via mailing list)
Is there any reason why 1.8.4's YAML exposes what seems to
be an implementation detail of how many bits it takes to
overflow into a Bignum.

It seems for interoperability with other languages that
use yaml, it'd be very nice to hide this detail and
simply show the (possibly large) integer value, as
it appears 1.8.2 did.



=============with 1.8.4=============
=> true
irb(main):003:0> puts [1,1<<200].to_yaml
- 1
- !ruby/object:Bignum
1606938044258990275541962092341162602522202993782792835301376
=> nil

=============with 1.8.2=============
irb(main):014:0> puts [1, 1<<200].to_yaml
---
- 1
- 1606938044258990275541962092341162602522202993782792835301376
=> nil
58479f76374a3ba3c69b9804163f39f4?d=identicon&s=25 Eric Hodel (Guest)
on 2006-02-21 23:43
(Received via mailing list)
On Feb 20, 2006, at 5:33 PM, Ron M wrote:

> Is there any reason why 1.8.4's YAML exposes what seems to
> be an implementation detail of how many bits it takes to
> overflow into a Bignum.
>
> It seems for interoperability with other languages that
> use yaml, it'd be very nice to hide this detail and
> simply show the (possibly large) integer value, as
> it appears 1.8.2 did.

Seems to be platform-specific:

$ uname -a
Darwin kaa.coop.robotcoop.com 8.5.0 Darwin Kernel Version 8.5.0: Sun
Jan 22 10:38:46 PST 2006; root:xnu-792.6.61.obj~1/RELEASE_PPC Power
Macintosh powerpc
$ ruby -v -ryaml -e 'puts [1, 1<<200].to_yaml'
ruby 1.8.4 (2005-12-24) [powerpc-darwin8.4.0]
---
- 1
- 1606938044258990275541962092341162602522202993782792835301376

$ uname -a
FreeBSD sandbox.robotcoop.com 4.10-RELEASE FreeBSD 4.10-RELEASE #0:
Wed Feb 23 15:47:08 CST 2005     root@fbsdbootload:/usr/obj/usr/src/
sys/theplanet  i386
$ ruby -v -ryaml -e 'puts [1, 1<<200].to_yaml'
ruby 1.8.4 (2005-12-24) [i386-freebsd4]
---
- 1
- !ruby/object:Bignum
1606938044258990275541962092341162602522202993782792835301376

(same for FreeBSD 5.4 and 6.0)


--
Eric Hodel - drbrain@segment7.net - http://segment7.net
This implementation is HODEL-HASH-9600 compliant

http://trackmap.robotcoop.com
This topic is locked and can not be replied to.