In this case, I think Java's lack of tuples adds quite a bit of syntactic noise, a similar version in rust (another language with method chaining based iterator

In this case, I think Java's lack of tuples adds quite a bit of syntactic noise, a similar version in rust (another language with method chaining based iterators): let generated: Vec<i32> = itertools::iterate((0, 1), |&(a, b)| (b, a + b)) .map(|s| s.0) .take(10) .collect(); Arguably, this is closer to the matrix form of Fibonacci series[1]. In addition, the same code structure can generalize to any series with a recursive definition in the form of: a_n = f(a_{n-1}, a_{n-2}, ..., a_{n-k}) - which by some standard expresses intent better. Especially, for some k, the mental overhead of a loop version is too much to bare :) [1] https://wikimedia.org/api/rest_v1/media/math/render/svg/c795926ab8f80e6207800de0451de69a69b8f641 https://wikimedia.org/api/rest_v1/media/math/render/svg/c795...