Difference between Dir.glob and Find

Question

What is the difference between:

Dir.glob(File.join('.', '**', '*')).each do |e|

end

and

require 'find'
Find.find('.').each do |e|

end

Despite the fact that Find is 3 times slower.

Answer 1

Dir.glob iterates over all files/directories that match the argument possibly including wild characters in a flat way, whereas Find.find first iterates over a direct files/directories that match the exact path name, then looks into its direct files/directories in a recursive way. With Find.find, you can skip the whole directory.