From: Justin Collins <collinsj@...>
Date: 2006-06-23T03:10:06+09:00
Subject: Re: Entry Point?

Azalar wrote:
> Does ruby have an entry point like Java & C have main?
>
> For instance if i had the following code..
>
> puts "Calling method"
> method()
>
> def method
> # do something here..
> end
>
> This will fail because the definition for method is after the call for 
> it
> This wouldnt matter in Java or C with it being pre-compiled i guess.
>
> So with this in mind i am wondering how best to organise my code.
> Is there a default method i can override which will always be called 
> first?
>   
Generally, you will see method and class definitions at the top of the 
file, then the 'main' code down at the bottom. Or, even more commonly, 
the classes are all in a separate file and 'require'd at the top of the 
file which is executed.

Also, note that in languages like C++ you still have to have 'forward' 
class declarations or function prototypes in order to use them before 
they are defined in the file. It isn't much different.

However, in Ruby, there is no need for a 'main', although people use 
different methods as mentioned in other replies.

-Justin