From: "Einar Magnús Boson" <einarmagnus@...>
Date: 2008-12-14T02:33:55+09:00
Subject: Re: Function def at end of scripts


On 13.12.2008, at 09:11 , David A. Black wrote:

>  This message is in MIME format.  The first part should be readable  
> text,
>  while the remaining parts are likely unreadable without MIME-aware  
> tools.
> Hi --
>
> On Sat, 13 Dec 2008, Einar Magnús Boson wrote:
>
>>
>> On 13.12.2008, at 00:02 , ara.t.howard wrote:
>>
>>> On Dec 12, 2008, at 10:06 AM, No Where wrote:
>>>> Hi,
>>>> I am refactoring an ugly script. I would like it contained all in  
>>>> one
>>>> file so I was moving code to functions/classes and put them at  
>>>> the end
>>>> of the script for legibility. This didn't work. They are only  
>>>> available
>>>> if I put them at the beginning of the script before I need them. Is
>>>> there a way to declare them at the beginning so I can put them  
>>>> all at
>>>> the end of the file?
>>>> Thanks!
>>>> Eric
>>>> -- 
>>>> Posted via http://www.ruby-forum.com/.
>>> stuff
>>> BEGIN {
>>> def stuff
>>> end
>>> }
>>> a @ http://codeforpeople.com/
>>> --
>>> we can deny everything, except that we have the possibility of  
>>> being better. simply reflect on that.
>>> h.h. the 14th dalai lama
>>
>>
>> #!/usr/bin/env ruby -wKU
>> END {
>> 	puts "http://www.java2s.com/Code/Ruby/Statement/ThecodeinablocklabeledwiththekeywordBEGINisrunautomaticallywhenaRubyprogramisloaded.htm 
>> " }
>>
>> stuff
>>
>> BEGIN {
>> 	def stuff
>> 		puts "who would've guessed?"
>> 	end
>> }
>> # >> who would've guessed?
>> # >> http://www.java2s.com/Code/Ruby/Statement/ThecodeinablocklabeledwiththekeywordBEGINisrunautomaticallywhenaRubyprogramisloaded.htm
>>
>> This is cool. Thanks!
>
> It can serve a purpose, but please have mercy on those of us who like
> our Ruby in order :-) It's really not that hard to get used to the
> principle that the code (including method definitions) is executed as
> it's encountered, and then you don't have to think about whether or
> not to flip it.
>
>
> David
>
> -- 
> Rails training from David A. Black and Ruby Power and Light:
> INTRO TO RAILS (Jan 12-15), Fort Lauderdale, FL
> See http://www.rubypal.com for details
> Coming in 2009: The Well-Grounded Rubyist (http://manning.com/black2)


I actually have a hard time envisioning a scenario where I would ever  
use this. Still good to know of. Looking into it made me find some  
other weird stuff I had never come across before though, like the flip- 
flop operator that took me a while to figure out properly. That is  
also something I don't see myself using though, it has a bit too  
complicated semantics for my taste and feels like obfuscation just to  
avoid an extra line.


einarmagnus