From: pdahorek@...
Date: 2018-07-20T20:23:40+00:00
Subject: [ruby-core:88033] [Ruby trunk Feature#14927] Loading multiple files	at once

Issue #14927 has been updated by ahorek (Pavel Rosick��).


Dir glob has to find all files, sort them, create objects.
Then require loads them again from the filesystem...

I think Dir.glob + require is a very common pattern and if we have a function like require_directory / require_tree? some of these unnecessary steps could be skipped and simplified.

----------------------------------------
Feature #14927: Loading multiple files at once
https://bugs.ruby-lang.org/issues/14927#change-73050

* Author: deneb (S��bastien Durand)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
----------------------------------------
Just a proof concept I wanted to share. Maybe it could be useful?

Say you want to load all the .rb files in your lib directory:

~~~ ruby

Dir['lib/**/*.rb'].each { |file| load(file) }
~~~


This approach may not work if your files have dependencies like that:

~~~ ruby
# lib/foo.rb

class Foo < Bar

end
~~~

~~~ ruby
# lib/bar.rb

class Bar

end

~~~

Foo class needs Bar class. You will get a NameError (uninitialized constant Bar).


So in my personal projects, I use this algorithm to load all my files and to automatically take care of dependencies (class/include):

~~~ ruby
def boot(files)
  i = 0
  while i < files.length
    begin
      load(files[i])
    rescue NameError
      i += 1
    else
      while i > 0
        files.push(files.shift)
        i -= 1
      end
      files.shift
    end
  end
end
~~~
~~~ ruby

boot Dir['lib/**/*.rb'] # It works! foo.rb and bar.rb are properly loaded.
~~~

My point is: it would be cool if Kernel#load could receive an array of filenames (to load all these files in the proper order). So we could load all our libs with just a single line:

~~~ ruby
load Dir['{path1,path2}/**/*.rb']
~~~




-- 
https://bugs.ruby-lang.org/

Unsubscribe: <mailto:ruby-core-request@ruby-lang.org?subject=unsubscribe>
<http://lists.ruby-lang.org/cgi-bin/mailman/options/ruby-core>