This site provides a collection of Ruby script examples, handy cheat sheets, and clear, concise explanations — all in one place. Each page shows real Ruby code you can run and learn from, helping you grasp both the syntax and the logic behind it.

ARRAY

• common_element.rb
• percent_expression.rb
• text2array.rb

B2B

• binary_search.rb
• binary_tree.rb
• ipaddress.rb
• quick_sort.rb
• search_csv_data.rb
• sentinel+run_detection.rb
• tail_recursion.rb

CSV

• read_with_new.rb
• read_with_read_bom.rb

DATE

• daynames.rb
• dow.rb
• format.rb
• monday_of_this_week1.rb
• monday_of_this_week2.rb
• monthnames.rb

DIGEST

• md5sum.rb

ENCRYPTION

• with_rsa.rb

ERB

• read_file.rb
• read_file_direct.rb

FILE

• foreach.rb
• read.rb
• to_array.rb
• write.rb

HASH

• zero_init.rb

HEREDOC

• plain_text.rb
• with_value.rb

HTTP

• response_code_2xx.rb

IO

• stdin.rb

IP

• aggregator.rb
• ip-int.rb
• mask.rb

JOIN

• crossjoin.rb
• outer_join.rb

JSON

• read_with_load.rb
• read_with_open.rb
• read_with_parse.rb
• simple_get.rb
• write_file_with_open.rb
• write_file_with_write.rb

LOGGER

• info.rb
• warn.rb

META

• hash2class.rb

PATH

• dir.rb
• file.rb

RANGE

• char.rb

ROO

• cell.rb
• sheets_name.rb
• to_array.rb

SCRIPT

• deprecate_method.rb
• main_block.rb

SERIALIZATION

• deserialization.rb
• serialization.rb

TEXT

• objects_to_text.rb
• to_objects.rb

Github Repository

https://github.com/YumaYX/rubydemodoc