From: Robert Klemme <shortcutter@...>
Date: 2006-08-16T05:55:09+09:00
Subject: Re: goto function?

fabsy wrote:
> Hey!
> I have been trying to find a goto function in ruby..
> Like this:
> 
> foo: bar
> If blabla then GOTO foo
> 
> Is there any command for exiting the app?
> And how do I search ex a textfile for a certain word and delete it?
> 
> 
> ------
> 
> if value == "2"
> 		system('clear')
> 		print "[Opening file..]\n\n"
> 			r_file = File.open( "file", "a") #Wrote this so I wouldn't get an
> error like "File doesn't exist".
> 			r_file = File.open( "file", "r")
> 			print "-----\n"
> 			print r_file.read
> 			print "-----"
> 			print "\n"
> 			system ('ruby note.rb')  #is there anyway to restart or goto the
> beginning of the script?
> 		end
> 
> -----
> 
> Thanks!
> 

begin
...
end while your_condition_here

begin
...
end until your_condition_here

If you need an endless loop

loop do
...
end

See also
http://ruby-doc.org/docs/ProgrammingRuby/html/tut_expressions.html#S6

Note that your script opens the file over and over again and never 
closes it.  This can cause problems - especially since you do it with 
different modes.

Kind regards

	robert