From: wolf@...
Date: 2018-03-04T23:18:44+00:00
Subject: [ruby-core:85923] [Ruby trunk Feature#4824] Provide method	Kernel#executed?

Issue #4824 has been updated by graywolf (Gray Wolf).


dsferreira (Daniel Ferreira) wrote:
> [..]
> 
> Usually when we use
> 
> ```ruby
> if __FILE__ == $0
>   # call code to be run
>   main(ARGV)
> end
> ```
> 
> We are saying that the code should only be executed if the condition applies.
> 
> [..]

Exactly, and the condition is: *was this file directly* **executed?**.

I mean, I get what you mean, but still think it's confusing.

----------------------------------------
Feature #4824: Provide method Kernel#executed?
https://bugs.ruby-lang.org/issues/4824#change-70778

* Author: lazaridis.com (Lazaridis Ilias)
* Status: Assigned
* Priority: Normal
* Assignee: matz (Yukihiro Matsumoto)
* Target version: 
----------------------------------------
The current construct to execute main code looks not very elegant:

~~~ruby
if __FILE__ == $0
  my_main()          # call any method or execute any code
end
~~~

With a `Kernel#executed?` method, this would become more elegant:

~~~ruby
if executed?
  #do this
  #do that
  my_main()
end
~~~

or

~~~ruby
main() if executed?
~~~

This addition would not break any existent behaviour.




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