does Object#to_enum exist?

[Dan Zwell]

Hi, all.

I saw someone post a snippet of code that turned an object (with some
sort of "each" method) into an enumerable. It looked really neat, until
I tried:
NoMethodError: undefined method `to_enum' for "abcdef":String
from (irb):1
I looked it up and ri seems to think I have Object#to_enum. The
underlying code is c, so frankly, I don't understand it. Even running
the examples from the documentation or looking at Object.new.methods, I
see nothing about this elusive method. Does anybody have any insight?
(I'm using ruby 1.8.6.)

Thanks,
Dan

 

[Stefano Crocco]

Alle gioved=EC 26 aprile 2007, Dan Zwell ha scritto:

Hi, all.

I saw someone post a snippet of code that turned an object (with some
sort of "each" method) into an enumerable. It looked really neat, until

I tried:

NoMethodError: undefined method `to_enum' for "abcdef":String
from (irb):1


I looked it up and ri seems to think I have Object#to_enum. The
underlying code is c, so frankly, I don't understand it. Even running
the examples from the documentation or looking at Object.new.methods, I
see nothing about this elusive method. Does anybody have any insight?
(I'm using ruby 1.8.6.)

Thanks,
Dan

You need to require 'enumerator'. Doing this will result in the to_enum met=
hod=20
to be added to the Kernel module and to class Object, which mixes Kernel in=
=2E=20
=46or example

require 'enumerator'

"abcdef".to_enumeach_byte).each{|b| puts b.chr}
a
b
c
d
e
f

I hope this helps

Stefano