![\"contributions](\"https://img.shields.io/badge/contributions-welcome-brightgreen.svg?style=flat\"/){kind=icon}
\n \n \n ![\"link\"](\"https://github.com/lifeparticle/Ruby-Cheatsheet/actions/workflows/python-app.yml/badge.svg\"/){kind=icon}
\n \n\n \n 💎\n \n \n \n \n \n \n \n
| Logical operators | \nBitwise operators | \nArithmetic operators | \nAssignment operators | \nComparison operators | \n
|---|---|---|---|---|
| \n\n| No | Operator |\n| --- | -------- |\n| 1 | and |\n| 2 | or |\n| 3 | not |\n| 4 | && |\n| 5 | \\|\\| |\n| 6 | ! |\n\n | \n\n\n\n| No | Operator |\n| --- | -------- |\n| 1 | & |\n| 2 | \\| |\n| 3 | ^ |\n| 4 | ~ |\n| 5 | << |\n| 6 | >> |\n\n | \n\n\n\n| No | Operator |\n| --- | -------- |\n| 1 | + |\n| 2 | - |\n| 3 | \\* |\n| 4 | / |\n| 5 | % |\n| 6 | \\*\\* |\n\n | \n\n\n\n| No | Operator |\n| --- | -------- |\n| 1 | = |\n| 2 | += |\n| 3 | -= |\n| 4 | \\*= |\n| 5 | /= |\n| 6 | %= |\n| 7 | \\*\\*= |\n\n | \n\n\n\n| No | Operator |\n| --- | -------- |\n| 1 | == |\n| 2 | != |\n| 3 | > |\n| 4 | < |\n| 5 | >= |\n| 6 | <= |\n| 7 | <=> |\n| 8 | === |\n| 9 | eql? |\n| 10 | equal? |\n\n | \n\n
![\"ruby-scripts\"](\"https://img.shields.io/badge/ruby-scripts-red.svg?style=flat\"/){kind=icon}
\n\n# Platforms that supports Ruby\n\n1. [Heroku](https://www.heroku.com/ruby)\n2. [Vercel](https://vercel.com/docs/serverless-functions/supported-languages#ruby)\n3. [AWS Lambda](https://docs.aws.amazon.com/lambda/latest/dg/lambda-ruby.html)\n4. [Fly.io](https://fly.io/)\n\n# Ruby frameworks\n\n1. [Ruby on Rails](https://rubyonrails.org/)\n2. [Sinatra](http://sinatrarb.com/)\n3. [Padrino](http://padrinorb.com/)\n4. [Goliath](https://postrank-labs.github.io/goliath/)\n5. [Hanami](https://hanamirb.org/)\n6. [NYNY](https://alisnic.github.io/nyny/)\n7. [Cuba](https://github.com/soveran/cuba)\n8. [Grape](https://www.ruby-grape.org/)\n9. [Scorched](https://scorchedrb.com/)\n10. [Roda](https://roda.jeremyevans.net/documentation.html)\n11. [Volt](https://github.com/voltrb/volt)\n12. [Hobbit](https://github.com/patriciomacadden/hobbit)\n\n# My Ruby Articles\n\n1. [A Beginner’s Guide To Ruby](https://medium.com/@lifeparticle/a-beginners-guide-to-ruby-810f230c53da)\n2. [17 Useful Ruby String Methods to Clean and Format Your Data](https://towardsdatascience.com/17-useful-ruby-string-methods-to-clean-and-format-your-data-9c9147ff87b9)\n3. [How to Deploy a Ruby Serverless Function to Vercel](https://towardsdatascience.com/how-to-deploy-a-ruby-serverless-function-to-vercel-da8c3581f7c2)\n4. [Useful Ruby Array Methods to Manage Your Data](https://towardsdatascience.com/useful-ruby-array-methods-to-manage-your-data-4d2813c63ccf)\n5. [An Introduction to Ruby Hashes](https://towardsdatascience.com/an-introduction-to-ruby-hash-1c1c4b2dd905)\n6. [How to Dockerize an Existing Sinatra Application](https://towardsdatascience.com/how-to-dockerize-an-existing-sinatra-application-3a6943d7a428)\n7. [How To Dockerize an Existing Ruby on Rails Application](https://towardsdatascience.com/how-to-dockerize-an-existing-ruby-on-rails-application-3eb6d16ec392)\n8. [How To Parse Data Using Ruby and Selenium](https://towardsdatascience.com/how-to-parse-data-using-ruby-and-selenium-5cf11605340c)\n\n# Books and other resources\n\n1. [Ruby doc](https://ruby-doc.org/)\n2. [What is attr_accessor in Ruby?](https://stackoverflow.com/questions/4370960/what-is-attr-accessor-in-ruby)\n3. [Ruby Module Mixin Awesomeness](https://johnmcaliley.wordpress.com/2010/03/10/ruby-module-mixin-awesomeness/)\n4. [Tutorials](https://www.cosmiclearn.com/ruby/index.php)\n5. [Pattern matching - New feature in Ruby 2.7](https://speakerdeck.com/k_tsj/pattern-matching-new-feature-in-ruby-2-dot-7?slide=24)\n6. [Awesome Ruby Blogs](https://github.com/Yegorov/awesome-ruby-blogs)\n7. [Ruby Scripts](https://github.com/jakewmeyer/Ruby-Scripts)\n8. [Awesome Ruby](https://github.com/markets/awesome-ruby)\n9. [Ruby Bookmarks](https://github.com/dreikanter/ruby-bookmarks)\n\n# Bug Reports and Feature Requests\n\nPlease create an issue with as much information you can. Thank you.\n\n# Contribution Guidelines\n\n![\"contribution](\"https://img.shields.io/badge/contribution-guidelines-brightgreen.svg?style=flat\"/){kind=icon}
\n\n# Author\n\nMahbub Zaman (https://mahbub.ninja)\n\n# License\n\nMIT License\n\n\n\n\n\n[1]: https://ruby-doc.org/core-3.1.2/doc/keywords_rdoc.html\n[2]: https://ruby-doc.org/core-3.1.2/Integer.html\n[3]: https://ruby-doc.org/core-3.1.2/Float.html\n[4]: https://ruby-doc.org/core-3.1.2/String.html\n[5]: https://ruby-doc.org/core-3.1.2/Array.html\n[6]: https://ruby-doc.org/core-3.1.2/Hash.html\n[7]: https://ruby-doc.org/core-3.1.2/TrueClass.html\n[8]: https://ruby-doc.org/core-3.1.2/FalseClass.html\n[9]: https://ruby-doc.org/core-3.1.2/Symbol.html\n[10]: https://ruby-doc.org/core-3.1.2/Range.html\n[11]: https://ruby-doc.org/core-3.1.2/NilClass.html\n[12]: https://ruby-doc.org/core-3.1.2/Exception.html\n\n\n"
},
{
"path": "RoR/README.md",
"content": "# Rails Debugging and Development Guide\n\n## Development Tools and URLs\n\n### Rails Development URLs\n\n- **Routes Information**: `http://localhost:3000/rails/info/routes`\n\n - Lists all available routes in your Rails application\n - Helpful for debugging routing issues\n - Shows controller actions and their corresponding URLs\n\n- **Letter Opener**: `http://localhost:3000/letter_opener`\n - Preview emails in the browser instead of sending them\n - Great for testing email functionality locally\n\n## Debugging Tools\n\n### Rails Console\n\n```bash\nrails c # or rails console\n```\n\n- Interactive console to test Ruby code\n- Direct database access\n- Test model associations\n- Execute arbitrary Ruby code in your app's environment\n\n```bash\nrails c\nuser = User.new # Create a new User\nuser.name = \"Test User\" # Set the name of the User\nuser.save # Save the User to the database\nuser.id # Get the ID of the User\nuser.auth_token # Get the auth_token of the User\nuser.errors # Get the errors of the User\nuser.errors.full_messages # Get the full messages of the errors\nuser.destroy # Destroy the User\n\n\nUser.all # Get all Users\nUser.first # Get the first User\nUser.last # Get the last User\nUser.count # Get the number of Users\nUser.find(1) # Get the User with ID 1\nUser.find_by(name: \"Test User\") # Get the User with name \"Test User\" \nUser.take # Get a random User\nUser.delete_all # todo\n```\n\n### Rails Logger\n\n```ruby\nRails.logger.debug \"Debug: @user = #{@user}\"\n```\n\nOther log levels:\n\n```ruby\nRails.logger.info \"Info message\"\nRails.logger.warn \"Warning message\"\nRails.logger.error \"Error message\"\nRails.logger.fatal \"Fatal message\"\n```\n\n### Removes old assets and compiles fresh ones\n\n```ruby\nrails assets:clean && rails assets:precompile\n```\n\n## Database Commands\n\n### Seeding Data\n\n```bash\nrails db:seed:development:users # Seed development user data\nrails db:seed # Run all seed files\n```\n\nOther useful database commands:\n\n```bash\nrails db:migrate # Run pending migrations\nrails db:migrate:status # todo\nrails db:rollback # Rollback last migration\nrails db:rollback STEP=5 # Rollback last 5 migrations\nrails db:migrate:down VERSION=VERSION_NUMBER # Rollback to a specific version\nrails db:reset # Drop & recreate database\nrails db:setup # Create database, load schema, and initialize with seed data\nrails db:drop db:create db:migrate # Reset database by dropping, creating, and running migrations\nActiveRecord::Base.connection.tables # List all database tables\nActiveRecord::Base.connection.columns('users').map(&:name) # List all column names of the 'users' table\n\n```\n\n### Rails Migration File Naming Guide\n\n#### Location\nAll migration files are stored in the `db/migrate/` directory.\n\n#### Filename Format\n\n`YYYYMMDDHHMMSS_migration_name.rb`\n\n**Examples**:\n- `20250402104500_create_users.rb`\n- `20250402110000_add_status_to_orders.rb`\n- `20250402113000_rename_email_in_customers.rb`\n\n```\nrails generate migration CreateUsers\n```\n\n#### Class Name Format\nThe migration class name should match the CamelCased version of the file’s suffix.\n\n**Examples**:\n- `20250402104500_create_users.rb` → `class CreateUsers`\n- `20250402110000_add_status_to_orders.rb` → `class AddStatusToOrders`\n- `20250402113000_rename_email_in_customers.rb` → `class RenameEmailInCustomers`\n\n> ⚠️ **Important**: If you rename the migration file, you **must update the class name** inside the file to match, or Rails will raise a `NameError` about a missing class.\n\n#### Using the `change` Method\n\nRails migrations often use the `change` method instead of `up` and `down` for simpler reversible actions. \nRails can **automatically reverse** the following methods:\n\n- `add_column`\n- `add_index`\n- `add_timestamps`\n- `create_table`\n- `remove_timestamps`\n- `rename_column`\n- `rename_index`\n- `rename_table`\n\n> For more complex migrations, use explicit `up` and `down` methods.\n\n### Model\n\nStudent model represents a single student, so it's singular. The students table holds all of the students, so it's plural.\n\nCreate a model\n\n```shell\nrails g model Student first_name:string last_name:string gender:string\n```\n\n## Code Quality Tools\n\n### RuboCop\n\nBasic usage:\n\n```bash\nbundle exec rubocop # Check code style\n```\n\nAuto-correction options:\n\n```bash\nbundle exec rubocop -a # Safe auto-corrections (--auto-correct)\nbundle exec rubocop -A # Safe + unsafe auto-corrections (--auto-correct-all)\n```\n\nCommon RuboCop flags:\n\n```bash\nrubocop --only Style/StringLiterals # Check specific cop\nrubocop --format html > rubocop.html # Generate HTML report\nrubocop --auto-gen-config # Generate .rubocop_todo.yml\n```\n\n### Performance Monitoring\n\n```ruby\n# Add at the start of a block you want to measure\nstart_time = Time.now\n\n# Add at the end of the block\nend_time = Time.now\nRails.logger.debug \"Operation took #{end_time - start_time} seconds\"\n```\n\n### RSpec\n\n```bash\nbundle exec rspec\n```\n\n----------------------------\n\n\n```\nannotate\n```\n\n\n# **Rails Best Practices**\n\n## Comments\n\n* File/class-level comments\n\n 1. Every class definition should have an accompanying comment\n that describes what it is for and how it should be used.\n 2. A file that contains zero classes or more than one class should have\n a comment at the top describing its contents.\n 3. All files, including data and config files, should have file-level comments.\n\n* Function comments\n 1. Every function declaration should have comments immediately\n preceding it that describe what the function does and how to use it.\n 2. Every function should mention what the inputs and outputs are,\n unless it meets all of the following criteria:\n 1. not externally visible\n 2. very short\n 3. obvious\n\n* Block and inline comments\n 1. Complicated operations get a few lines of comments before\n the operations commence. Non-obvious ones get comments at the end of the line.\n 2. do not use block comments. They cannot be preceded by whitespace and are not\n as easy to spot as regular comments.\n* Punctuation, spelling and grammar\n 1. Pay attention to punctuation, spelling, and grammar;\n it is easier to read well-written comments than badly written ones.\n 2. Comments should be as readable as narrative text,\n with proper capitalization and punctuation.\n 3. In many cases, complete sentences are more readable than sentence fragments.\n 4. Shorter comments, such as comments at the end of a line of code, can sometimes be\n less formal, but you should be consistent with your style.\n* TODO comments\n 1. Use **TODO** comments for code that is temporary,\n a short-term solution, or good-enough but not perfect.\n 2. TODOs should include the string **TODO** in all caps, followed by the full name of the person who can best provide\n context about the problem referenced by the TODO, in parentheses.\n 3. A **colon** is optional.\n 4. A comment explaining what there is to do is required.\n 5. The main purpose is to have a consistent TODO format that can be searched to find the person who can provide more details upon request.\n 6. A TODO is not a commitment that the person referenced will fix the problem.\n\n```ruby\n# bad\n# TODO(TDO): Use proper namespacing for this constant.\n\n# bad\n# TODO(orinify122): Use proper namespacing for this constant.\n\n# good\n# TODO(Orin): Use proper namespacing for this constant.\n```\n\n* Commented-out code\n\n1. Never leave commented-out code in the codebase.\n\n\n\n# Resources\n1. https://dev.to/ericchapman/my-beloved-ruby-on-rails-cheat-sheet-50pi\n2. https://gist.github.com/mdang/95b4f54cadf12e7e0415\n"
},
{
"path": "Scripts/README.md",
"content": "Run using docker.\n\n```\ndocker run -it --rm -v $HOME/Desktop/Scripts:/Scripts --name scripts ruby bash\ncd Scripts\nruby strings_sort.rb\n```\n\n- [download_files](https://github.com/lifeparticle/Ruby-Cheatsheet/blob/master/Scripts/download_files.rb)\n- [duration_converter](https://github.com/lifeparticle/Ruby-Cheatsheet/blob/master/Scripts/duration_converter.rb)\n- [empty_string_finder](https://github.com/lifeparticle/Ruby-Cheatsheet/blob/master/Scripts/empty_string_finder.rb)\n- [omdbapi](https://github.com/lifeparticle/Ruby-Cheatsheet/blob/master/Scripts/omdbapi.rb)\n- [rm_dup_from_array](https://github.com/lifeparticle/Ruby-Cheatsheet/blob/master/Scripts/rm_dup_from_array.rb)\n- [strings_sort](https://github.com/lifeparticle/Ruby-Cheatsheet/blob/master/Scripts/strings_sort.rb)\n- [csv](https://github.com/lifeparticle/Ruby-Cheatsheet/tree/master/Scripts/csv)\n- [web_scraper](https://github.com/lifeparticle/Ruby-Cheatsheet/blob/master/Scripts/web_scraper)\n"
},
{
"path": "Scripts/csv/README.md",
"content": "https://ruby-doc.org/stdlib-2.6.3/libdoc/csv/rdoc/CSV.html\n"
},
{
"path": "Scripts/csv/addresses.csv",
"content": "id,location_id,address_1,address_2,city,state_province,postal_code,country\n1,1,2600 Middlefield Road,,Redwood City,CA,94063,US\n2,2,24 Second Avenue,,San Mateo,CA,94401,US\n3,3,24 Second Avenue,,San Mateo,CA,94403,US\n4,4,24 Second Avenue,,San Mateo,CA,94401,US\n5,5,24 Second Avenue,,San Mateo,CA,94401,US\n6,6,800 Middle Avenue,,Menlo Park,CA,94025-9881,US\n7,7,500 Arbor Road,,Menlo Park,CA,94025,US\n8,8,800 Middle Avenue,,Menlo Park,CA,94025-9881,US\n9,9,2510 Middlefield Road,,Redwood City,CA,94063,US\n10,10,1044 Middlefield Road,,Redwood City,CA,94063,US\n11,11,2140 Euclid Avenue.,,Redwood City,CA,94061,US\n12,12,1044 Middlefield Road,2nd Floor,Redwood City,CA,94063,US\n13,13,399 Marine Parkway.,,Redwood City,CA,94065,US\n14,14,660 Veterans Blvd.,,Redwood City,CA,94063,US\n15,15,1500 Valencia Street,,San Francisco,CA,94110,US\n16,16,1161 South Bernardo,,Sunnyvale,CA,94087,US\n17,17,409 South Spruce Avenue,,South San Francisco,CA,94080,US\n18,18,114 Fifth Avenue,,Redwood City,CA,94063,US\n19,19,19 West 39th Avenue,,San Mateo,CA,94403,US\n20,21,123 El Camino Real,,Belmont,CA,94002,US\n21,22,2013 Avenue of the fellows,Suite 100,San Francisco,CA,94103,US\n"
},
{
"path": "Scripts/csv/read_csv.rb",
"content": "require 'csv'\n\nCSV.foreach(\"addresses.csv\", headers: true) do |row|\n\tputs row['id']\n\tputs row['location_id']\n\tputs row['address_1']\n\tputs row['address_2']\n\tputs row['city']\n\tputs row['state_province']\n\tputs row['postal_code']\n\tputs row['country']\n\tputs '========'\nend\n"
},
{
"path": "Scripts/download_files.rb",
"content": "require 'open-uri'\n\nfonts = [\n\"https://www.omicronlab.com/download/fonts/kalpurush.ttf\",\n\"https://www.omicronlab.com/download/fonts/kalpurush%20ANSI.ttf\",\n\"https://www.omicronlab.com/download/fonts/Siyamrupali.ttf\",\n\"https://www.omicronlab.com/download/fonts/Siyam%20Rupali%20ANSI.ttf\",\n\"https://www.omicronlab.com/download/fonts/AponaLohit.ttf\",\n\"https://www.omicronlab.com/download/fonts/SolaimanLipi_20-04-07.ttf\",\n\"https://www.omicronlab.com/download/fonts/Bangla.ttf\",\n\"https://www.omicronlab.com/download/fonts/AdorshoLipi_20-07-2007.ttf\",\n\"https://www.omicronlab.com/download/fonts/BenSen.ttf\",\n\"https://www.omicronlab.com/download/fonts/BenSenHandwriting.ttf\",\n\"https://www.omicronlab.com/download/fonts/Nikosh.ttf\",\n\"https://www.omicronlab.com/download/fonts/NikoshBAN.ttf\",\n\"https://www.omicronlab.com/download/fonts/NikoshGrameen.ttf\",\n\"https://www.omicronlab.com/download/fonts/NikoshLight.ttf\",\n\"https://www.omicronlab.com/download/fonts/NikoshLightBan.ttf\",\n\"https://www.omicronlab.com/download/fonts/akaashnormal.ttf\",\n\"https://www.omicronlab.com/download/fonts/mitra.ttf\",\n\"https://www.omicronlab.com/download/fonts/sagarnormal.ttf\",\n\"https://www.omicronlab.com/download/fonts/muktinarrow.ttf\",\n\"https://www.omicronlab.com/download/fonts/Mukti_1.99_PR.ttf\",\n\"https://www.omicronlab.com/download/fonts/Lohit_14-04-2007.ttf\",\n\"https://www.bd.undp.org/content/dam/bangladesh/img/News/news2018/UN%20bangla.ttf\"\n]\n\nbegin\n\tfonts.each do |font|\n\t\tfont_name = font.split(/\\//).last.gsub('%20', ' ')\n\t\tputs \"Downloading #{font_name} ...\"\n\t\tread_font = open(font)\n\t\tFile.write(\"#{font_name}\", read_font)\n\tend\nrescue Exception => e\n\tputs e\nend\n"
},
{
"path": "Scripts/duration_converter.rb",
"content": "durations = [\n\"2:22\",\n\"1:57\",\n\"1:23\",\n\"2:39\",\n\"1:26\",\n\"2:00\",\n\"1:30\",\n\"2:13\",\n\"1:47\"]\n\ndurations.each do |duration|\n\tduration_array = duration.split(/:/)\n\thour_min = duration_array[0].to_i * 60\n\tmins = duration_array[1].to_i\n\ttotal_mins = hour_min + mins\n\tputs \"#{total_mins}\"\nend\n"
},
{
"path": "Scripts/empty_string_finder.rb",
"content": "array = [\n\"R\",\n\"R\",\n\"R\",\n\"R\",\n\"\",\n\"PG-13\",\n\"R\",\n\"R\",\n\"R\",\n\"PG-13\",\n\"R\",\n\"PG-13\",\n\"R\",\n\"R\",\n\"\",\n\"R\",\n\"PG-13\",\n\"PG-13\"]\n\narray.each_with_index do |item, index|\n\tputs \"#{index}\" if item == \"\"\nend\n"
},
{
"path": "Scripts/omdbapi.rb",
"content": "require 'net/http'\nrequire 'json'\n\n# http://www.omdbapi.com/\n\nsecret = \"\"\nmovie_list = [\n\"127 Hours\",\n\"Life of Pi\",\n\"The Shallows\",\n\"The Impossible\",\n\"Buried\",\n\"Apocalypto\",\n\"Tunnel\",\n\"The Wave\",\n\"The Quake\",\n\"Thelma\",\n\"3 Idiots\",\n\"Ship of Theseus\",\n\"Zindagi Na Milegi Dobara\",\n\"Sahara\",\n\"Raiders of the Lost Ark\",\n\"Indiana Jones and the Temple of Doom\",\n\"Indiana Jones and the Last Crusade\",\n\"Indiana Jones and the Kingdom of the Crystal Skull\",\n\"Enemy of the State\",\n\"National Treasure\",\n\"The Rock\",\n\"Lord of War\",\n\"National Treasure: Book of Secrets\",\n\"Face/Off\",\n\"Con Air\",\n\"Mandy\",\n\"In the Shadow of the Moon\",\n\"The Neon Demon\",\n\"Mother!\",\n\"Maleficent\",\n\"Constantine\",\n\"The Conjuring\",\n\"The Conjuring 2\",\n\"Cloud Atlas\",\n\"Hugo\",\n\"The Polar Express\",\n\"Jaws\",\n\"Jumanji\",\n\"Annihilation\",\n\"Cloverfield\",\n\"2001: A Space Odyssey\",\n\"Minority Report\",\n\"A.I. Artificial Intelligence\",\n\"Starship Troopers\",\n\"The Fifth Element\",\n\"Close Encounters of the Third Kind\",\n\"Solaris\",\n\"Under the Skin\",\n\"Serenity\",\n\"Donnie Darko\",\n\"Mr. Nobody\",\n\"The Beach\",\n\"Body of Lies\"]\n\nmovie_list.each do |name|\n\tbegin\n\t\turl = URI.parse(URI.escape((\"http://www.omdbapi.com/?apikey=#{secret}&t=#{name}\")))\n\t\tres = Net::HTTP.get_response(url)\n\t\tif res.is_a?(Net::HTTPSuccess)\n\t\t\tparsed = JSON.parse(res.body)\n\t\t\truntime_h = parsed[\"Runtime\"].gsub(\" min\",\"/\").to_i / 60\n\t\t\truntime_m = parsed[\"Runtime\"].gsub(\" min\",\"/\").to_i % 60\n\t\t\tputs \"#{parsed[\"Title\"]}\\t#{parsed[\"Year\"]}\\t#{runtime_h}:#{runtime_m.to_s.rjust(2, \"0\")}\\t#{parsed[\"Genre\"].gsub(\", \",\"/\")}\"\n\t\tend\n\trescue Exception => e\n\t\tputs \"#{\"something bad happened\"} #{e}\"\n\tend\nend\n"
},
{
"path": "Scripts/rm_dup_from_array.rb",
"content": "a = [\n\"Drama\",\n\"Mystery\",\n\"Drama\",\n\"Mystery\",\n\"Drama\",\n\"Mystery\",\n\"Drama\",\n\"Crime\",\n\"Sci-FI\",\n\"Sci-fi\",\n\"Sci-Fi\",\n\"Disaster\",\n\"Thriller\",\n\"Action\",\n\"Drama\",\n\"Crime\",\n\"Drama\",\n\"Mystery\",\n\"Drama\",\n\"Mystery\",\n\"Drama\"\n]\n\ncase_sensitive = a.uniq\nputs case_sensitive\n\nputs \"\\n\"\n\n# Sci-FI will be in the case_insensitive array, since it's the first occurance\ncase_insensitive = a.uniq { |elem| elem.downcase }\nputs case_insensitive\n"
},
{
"path": "Scripts/strings_sort.rb",
"content": "a = [\"Drama\",\n\"Mystery\",\n\"Crime\",\n\"Sci-fi\",\n\"Disaster\",\n\"Thriller\"]\n\na.sort!\nputs a\n"
},
{
"path": "Scripts/web_scraper/README.md",
"content": "```\nbrew install chromedriver\n```\n\n[MacOS Catalina(v 10.15.3): Error: “chromedriver” cannot be opened because the developer cannot be verified. Unable to launch the chrome browser\n](https://stackoverflow.com/questions/60362018/macos-catalinav-10-15-3-error-chromedriver-cannot-be-opened-because-the-de)\n\n```\ncd /opt/homebrew/Caskroom/chromedriver/91.0.4472.19\n```\n\nWorking solution for macOS Big Sur\n```\nOpen Finder\nNavigate to where the chromedriver file is located\nRight-click on the chromedriver file and select open\nAfter this the script should work fine.\n```\n\n```\ngem install selenium-webdriver\n```\n\n\n1. [selenium-webdriver-doc](https://www.rubydoc.info/gems/selenium-webdriver/0.0.28/Selenium/WebDriver/Find)\n2. [tutorials](https://testautomationu.applitools.com/selenium-webdriver-with-ruby/)\n"
},
{
"path": "Scripts/web_scraper/web_scraper.rb",
"content": "require \"selenium-webdriver\"\nrequire 'uri'\n\ndef init_selenium_webdriver\n\toptions = Selenium::WebDriver::Chrome::Options.new\n\toptions.add_argument('--headless')\n\treturn Selenium::WebDriver.for :chrome, options: options\nend\n\ndef navigate(driver, url, page_no)\n\tdriver.navigate.to URI.join(url, page_no.to_s)\nend\n\ndef get_data(driver, pattern)\n\treturn driver.find_elements(pattern)\nend\n\ndef has_data?(data)\n\treturn data.size() > 0\nend\n\ndef parse_data(data, pattern)\n\tdata.each do |quote|\n\t\ttext = quote.find_element(pattern[:text]).text\n\t\tauthor = quote.find_element(pattern[:author]).text\n\t\tputs \"#{text} -- #{author}\"\n\tend\nend\n\ndef main\n\tdriver = init_selenium_webdriver\n\turl = \"http://quotes.toscrape.com/page/\"\n\tpage_no = 1\n\tloop do\n\t\tnavigate(driver, url, page_no)\n\t\tdata = get_data(driver, {class_name: 'quote'})\n\t\tparse_data(data, {text: {class_name: 'text'}, author: {class_name: 'author'}})\n\t\tpage_no += 1\n\t\tbreak unless has_data?(data)\n\tend\n\tdriver.quit\nend\n\nmain"
},
{
"path": "build_readme.py",
"content": "import requests\nimport pathlib\nimport json\nimport re\n\nRUBY_DOWNLOADS_URL = \"https://www.ruby-lang.org/en/downloads/\"\nRUBY_RSS_URL = \"https://api.rss2json.com/v1/api.json?rss_url=https://www.ruby-lang.org/en/feeds/news.rss\"\n\nroot = pathlib.Path(__file__).parent.resolve()\n\ndef replace_chunk(content, marker, chunk, inline=False):\n\t# build the regular expression pattern, DOTALL will match any character, including a newline\n\tr = re.compile(\n\t\tr\".*\".format(marker, marker),\n\t\tre.DOTALL,\n\t)\n\t# add newline before and after\n\tif not inline:\n\t\tchunk = \"\\n{}\\n\".format(chunk)\n\t# build the final chunk by adding comments before and after the chunk\n\tchunk = \"{}\".format(marker, chunk, marker)\n\t# replace matched string using pattern provided with the chunk\n\treturn r.sub(chunk, content)\n\ndef fetch_blog_posts(link):\n\tresult = []\n\tresponse = requests.get(link)\n\tif (response.status_code == 200):\n\t\tposts = json.loads(response.text)[\"items\"]\n\t\tfor post in posts:\n\t\t\tresult.append(post)\n\telif response.status_code == 404:\n\t\tprint('Not Found: ') + link\n\treturn result\n\ndef fetch_ruby_latest_version():\n\tresponse = requests.get(RUBY_DOWNLOADS_URL)\n\tif (response.status_code != 200):\n\t\traise RuntimeError(f\"Error while getting {RUBY_DOWNLOADS_URL}\")\n \t# search using the following regular expression and return the first occurrence\n\treturn re.search(\"http.*ruby-(.*).tar.gz\", response.text).groups()[0]\n\nif __name__ == \"__main__\":\n\treadme = root / \"README.md\"\n\treadme_contents = readme.open().read()\n\tposts = fetch_blog_posts(RUBY_RSS_URL)\n\n\tif len(posts) != 0:\n\t\t# markdown formatting\n\t\tposts_md = \"\\n\".join(\n\t\t\t[\"* [{title}]({link})