From: danieldasilvaferreira@...
Date: 2018-03-04T23:26:28+00:00
Subject: [ruby-core:85925] [Ruby trunk Feature#4824] Provide method	Kernel#executed?

Issue #4824 has been updated by dsferreira (Daniel Ferreira).


 graywolf (Gray Wolf) wrote:

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

We have two different contexts:

* File context (FILE#executed?) - Was the file executed?
* Code context (`Kernel#executable?`) - Is the code executable?

I prefer to work at the code context level since we can then add other conditions to allow a code to be executable.
e.g. 

```ruby
def executable?
  if __FILE__ == $0 && ARGV[1] == "foo"
end
```

----------------------------------------
Feature #4824: Provide method Kernel#executed?
https://bugs.ruby-lang.org/issues/4824#change-70780

* 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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