Inspecting cyclic structures

ruby-talk
1

hello,

is there a way to inspect an object only to a given depth to avoid infinite
loops in case of referential loops? like irb does:

irb(main):001:0> a = Object.new
=> #<Object:0x2be6cd0>
irb(main):002:0> b = Object.new
=> #<Object:0x2be4900>
irb(main):003:0> a.instance_variable_set(:@b, b)
=> #<Object:0x2be4900>
irb(main):004:0> b.instance_variable_set(:@a, a)
=> #<Object:0x2be6cd0 @b=#<Object:0x2be4900 @a=#<Object:0x2be6cd0 ...>>>
irb(main):005:0> a.inspect
=> "#<Object:0x2be6cd0 @b=#<Object:0x2be4900 @a=#<Object:0x2be6cd0 ...>>>"
irb(main):006:0>

thanks
konstantin

2

hello,

is there a way to inspect an object only to a given depth to avoid infinite
loops in case of referential loops? like irb does:

irb(main):001:0> a = Object.new
=> #<Object:0x2be6cd0>
irb(main):002:0> b = Object.new
=> #<Object:0x2be4900>
irb(main):003:0> a.instance_variable_set(:@b, b)
=> #<Object:0x2be4900>
irb(main):004:0> b.instance_variable_set(:@a, a)
=> #<Object:0x2be6cd0 @b=#<Object:0x2be4900 @a=#<Object:0x2be6cd0 ...>>>
irb(main):005:0> a.inspect
=> "#<Object:0x2be6cd0 @b=#<Object:0x2be4900 @a=#<Object:0x2be6cd0 ...>>>"
irb(main):006:0>

thanks
konstantin

   harp:~ > cat a.rb
   a = Object.new
   b = Object.new
   a.instance_variable_set(:@b, b)
   b.instance_variable_set(:@a, a)

   p a
   require "yaml" and y a
   require "pp" and pp a

   harp:~ > ruby a.rb
   #<Object:0xb75cdc64 @b=#<Object:0xb75cdc50 @a=#<Object:0xb75cdc64 ...>>>
   --- &id001 !ruby/object
   b: !ruby/object
   #<Object:0xb75cdc64 @b=#<Object:0xb75cdc50 @a=#<Object:0xb75cdc64 ...>>>

hth.

-a

···

On Tue, 14 Feb 2006, konsu wrote:
     a: *id001

--
judge your success by what you had to give up in order to get it.
- h.h. the 14th dali lama

3

please disregard this, it seems to work outside irb too. in still outputs
too much stuff in my case but it still does not loop forever.

konstantin

"konsu" <konsu@hotmail.com> wrote in message
news:99GdnSW6bqFtW23eRVn-jQ@kallback.com...

···

hello,

is there a way to inspect an object only to a given depth to avoid
infinite loops in case of referential loops? like irb does:

irb(main):001:0> a = Object.new
=> #<Object:0x2be6cd0>
irb(main):002:0> b = Object.new
=> #<Object:0x2be4900>
irb(main):003:0> a.instance_variable_set(:@b, b)
=> #<Object:0x2be4900>
irb(main):004:0> b.instance_variable_set(:@a, a)
=> #<Object:0x2be6cd0 @b=#<Object:0x2be4900 @a=#<Object:0x2be6cd0 ...>>>
irb(main):005:0> a.inspect
=> "#<Object:0x2be6cd0 @b=#<Object:0x2be4900 @a=#<Object:0x2be6cd0 ...>>>"
irb(main):006:0>

thanks
konstantin