9 lines
236 B
Elixir
9 lines
236 B
Elixir
import Euler.Algebra, only: [fib: 1, num_digits: 1]
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Stream.iterate(1, &(&1 + 1))
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|> Stream.map(&{&1, fib(&1)})
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|> Stream.filter(&num_digits(elem(&1, 1)) >= 1000)
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|> Enum.take(1)
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|> Enum.map(&elem(&1, 0) + 1)
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|> Enum.at(0)
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|> IO.puts()
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