ruby-core
Ruby Core Language Features
Comprehensive guide to Ruby 3.x core language features, idioms, and best practices.
Blocks, Procs, and Lambdas
Blocks
Blocks are anonymous functions passed to methods:
# Block with do...end (multi-line)
[1, 2, 3].each do |n|
puts n * 2
end
# Block with braces (single-line, returns value)
doubled = [1, 2, 3].map { |n| n * 2 }
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