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Groups > comp.lang.ruby > #3074

Re: Telnet "More?"

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Eric T. wrote in post #993311:
> In a slightly unrelated question, I don't understand why I have to do
> this:
>
>    out = lambda do |c| print c end
>    t.login('someusername', 'somepassword', &out)
>    t.cmd('dir', &out)
>    t.cmd('dir', &out)
>
> Rather than simply this:
>
>    t.login('someusername', 'somepassword', &print)
>    t.cmd('dir', &print)
>    t.cmd('dir', &print)
>
> Seems kinda pointless to make a function...

Which function are you referring to??

> which does nothing but pass
> it's arguments unaltered to another function.

Yes, that would be pointless, but where does such a function appear in 
your code?

In your code, the & does two things:

1) It calls to_proc() on the specified object.  print() is a method of 
the Kernel module, and Kernel doesn't define to_proc().

2) It tells ruby to use the Proc object as a block.

-- 
Posted via http://www.ruby-forum.com/.

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Telnet "More?" "Eric T." <erictetz@gmail.com> - 2011-04-17 02:10 -0500
  Re: Telnet "More?" Christopher Dicely <cmdicely@gmail.com> - 2011-04-17 09:56 -0500
    Re: Telnet "More?" "Eric T." <erictetz@gmail.com> - 2011-04-17 20:00 -0500
  Re: Telnet "More?" 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-17 17:47 -0500
    Re: Telnet "More?" "Eric T." <erictetz@gmail.com> - 2011-04-17 19:48 -0500
      Re: Telnet "More?" Christopher Dicely <cmdicely@gmail.com> - 2011-04-18 00:37 -0500
      Re: Telnet "More?" 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-19 12:21 -0500
  Re: Telnet "More?" "mouser" <invalid@invalid.com> - 2011-04-18 04:18 +0000
    Re: Telnet "More?" "mouser" <invalid@invalid.com> - 2011-04-18 04:22 +0000
  Re: Telnet "More?" Brian Candler <b.candler@pobox.com> - 2011-04-19 04:18 -0500
    Re: Telnet "More?" "mouser" <invalid@invalid.com> - 2011-04-19 16:36 +0000
      Re: Telnet "More?" Markus Fischer <markus@fischer.name> - 2011-04-19 12:12 -0500

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