Aliases

Array Link to heading

• map, collect
• << or push append
• size length
• flat_map collect_concat

Hash Link to heading

• key? has_key? member?
• size length
• find detect
• map collect
• flat_map collect_concat
• inject reduce

Other classes (examples) Link to heading

• to_sym intern
• to_a entries
• abs magnitude
• % modulo