lazy_enumerators_infinite_streams

🌀 Harness Lazy Enumerators for Infinite Streams

Enumerators in Ruby can be made lazy to handle potentially infinite sequences without exhausting memory. Using Enumerator.new and lazy, you can define streams like the Fibonacci sequence and retrieve only as many elements as you need on demand.

fib = Enumerator.new do |y|
  a, b = 0, 1
  loop do
    y << a
    a, b = b, a + b
  end
end.lazy

p fib.take(10).to_a
# => [0, 1, 1, 2, 3, 5, 8, 13, 21, 34]