adds ruby example

Author: Jaroslaw Zabiello

example-ruby/Gemfile

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+
+source 'https://rubygems.org'
+git_source(:github) { |repo| "https://github.com/#{repo}.git" }
+
+ruby '3.1.0'
+
+gem 'rubocop', require: false
+gem 'parallel'
+# gem 'irbtools', require: 'irbtools/binding'
+gem 'pry'
+gem 'pry-doc'
+gem 'pry-gem', '~> 1.0'

example-ruby/Gemfile.lock

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+GEM
+  remote: https://rubygems.org/
+  specs:
+    ast (2.4.2)
+    coderay (1.1.3)
+    method_source (1.0.0)
+    parallel (1.21.0)
+    parser (3.1.0.0)
+      ast (~> 2.4.1)
+    pry (0.14.1)
+      coderay (~> 1.1)
+      method_source (~> 1.0)
+    pry-doc (1.3.0)
+      pry (~> 0.11)
+      yard (~> 0.9.11)
+    pry-gem (1.0.0)
+      pry (~> 0.12)
+    rainbow (3.1.1)
+    regexp_parser (2.2.0)
+    rexml (3.2.5)
+    rubocop (1.25.1)
+      parallel (~> 1.10)
+      parser (>= 3.1.0.0)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml
+      rubocop-ast (>= 1.15.1, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 1.4.0, < 3.0)
+    rubocop-ast (1.15.1)
+      parser (>= 3.0.1.1)
+    ruby-progressbar (1.11.0)
+    unicode-display_width (2.1.0)
+    webrick (1.7.0)
+    yard (0.9.27)
+      webrick (~> 1.7.0)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  parallel
+  pry
+  pry-doc
+  pry-gem (~> 1.0)
+  rubocop
+
+RUBY VERSION
+   ruby 3.1.0p0
+
+BUNDLED WITH
+   2.3.5

example-ruby/README.md

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+```
+ruby words.rb
+```
+
+MacOS 12.2
+Ruby 3.1
+MBP 16" M1Max 10 cores
+Total files: 123
+Total size: 504 MB
+Total time:  2.0542 s

example-ruby/words.rb

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+require 'yaml'
+require 'parallel'
+require 'etc'
+require 'fileutils'
+
+outdir = 'words'
+start = Time.now
+
+FileUtils.rm_rf(outdir)
+Dir.mkdir(outdir)
+
+sorted = false
+
+paths = Dir['../data/pl/**/*.yml']
+
+Parallel.each(paths, in_processes: Etc.nprocessors) do |yaml_path| 
+  meta = YAML.load_file(yaml_path)
+  words = IO.read(yaml_path.gsub('.yml', '.txt')).downcase.strip.split(/[^\p{word}]+/).uniq
+  if sorted
+    words = words.sort
+  end
+  outpath = "#{outdir}/#{meta['lang']}-#{meta['code']}.txt"
+  puts outpath
+  File.write(outpath, words.join("\n"))
+end
+
+secs = Time.now - start
+puts "Total time: #{secs} s"
+