How can you find the most recently modified folder in a directory using Ruby?

Question

How can you find the most recently modified folder (NOT A FILE) in a directory using Ruby?

Answer 1

Find the most recently modified directory in the current directory:

folders = Dir["*"].delete_if{|entry| entry.include? "."}
newest = folders[0]
folders.each{|folder| newest = folder if File.mtime(folder) > File.mtime(newest)}