How to execute a break in a loop via user input

ruby-talk
1

Hi all,

i am a complete noobie here to Ruby and programming in general.

I was looking for the best way to break a loop using "user input" via
gets.

I have a loop running that needs to be broken when the user hits a
specified key.

What would be the best way to go about this?

Thank your for your time and attention and sorry for such a "noobie"
question!

WPPK

···

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

2

Thomas Wilson wrote:

Hi all,

i am a complete noobie here to Ruby and programming in general.

I was looking for the best way to break a loop using "user input" via
gets.

I have a loop running that needs to be broken when the user hits a
specified key.

What would be the best way to go about this?

Thank your for your time and attention and sorry for such a "noobie"
question!

WPPK

There is no best way, here are 2 ways to mull over, first way gives you an idea of how to break out of a loop. The 2ns way show use of a do/while loop, that test for the loop condition is done at the end, not the start.

while(true)
    c = gets
    break if c.chomp == 'x'
end

or

begin
    c = gets.chomp
end while c != 'x

···

--
Kind Regards,
Rajinder Yadav

http://DevMentor.org
Do Good ~ Share Freely

3

Thomas Wilson wrote:

Hi all,

i am a complete noobie here to Ruby and programming in general.

I was looking for the best way to break a loop using "user input" via
gets.

I have a loop running that needs to be broken when the user hits a
specified key.

...and then hits return? Otherwise, you are getting into advanced
stuff.

···

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

4

Hi,

Thomas Wilson wrote:

I have a loop running that needs to be broken when the user hits a
specified key.

There is no best way, here are 2 ways to mull over, first way gives you an
idea of how to break out of a loop. The 2ns way show use of a do/while
loop, that test for the loop condition is done at the end, not the start.

Be aware that pressing Ctrl-D (Unix) makes gets return nil, not a
string.

while(true)
   c = gets
   break if c.chomp == 'x'
end

  loop do
     c = gets
     break if not c or c.chomp == 'x'
  end

begin
   c = gets.chomp
end while c != 'x

  begin
     c = gets.to_s.chomp
  end while c != 'x

Bertram

···

Am Mittwoch, 14. Okt 2009, 11:55:50 +0900 schrieb Rajinder Yadav:

--
Bertram Scharpf
Stuttgart, Deutschland/Germany
http://www.bertram-scharpf.de