From: Song Choe <choesh@...>
Date: 2009-03-13T00:31:21+09:00
Subject: Newbie question about throw & catch.

--_9616f68c-8320-4a6d-a419-cee8dc772025_
Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable


HI.  Everyone.  Real newbie question with throw & catch.

=20

I am running the book example.
def promptAndGet(prompt)
  print prompt
  res =3D readline.chomp
  throw :quitRequested if res =3D=3D "!"
  return res
end


catch :quitRequested do
  name =3D promptAndGet("Name: ")
  age  =3D promptAndGet("Age:  ")
  sex  =3D promptAndGet("Sex:  ")
  # ..
  # process information
end
promptAndGet("Name:")When I run this and type "!" for every prompt(2) then =
I get the following errortemp1.rb:4:in `throw': uncaught throw `quitRequest=
ed' (NameError)
        from temp1.rb:4:in `promptAndGet'
        from temp1.rb:19Isn't catch supposed to run when "!" is ran? =20
If I don't put "!" on first prompt=2C I was expecting the program to end=2C=
 but the catch block runs anyway and asks
the Name at the end again.
Name: song
Age:  4
Sex:  m
Name:songPlease somebody help me explain how this throw & catch flow works.=
=20
Thank you.
_________________________________________________________________
Hotmail=AE is up to 70% faster. Now good news travels really fast.=20
http://windowslive.com/online/hotmail?ocid=3DTXT_TAGLM_WL_HM_70faster_03200=
9=

--_9616f68c-8320-4a6d-a419-cee8dc772025_--