Virtual (or lazy) representation of a repeated array

Specific Domains Machine Learning
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3

My first thought is simply Iterators.cycle. From the docs:

An iterator that cycles through iter forever. If n is specified, then it cycles through iter that many times. When iter is empty, so are cycle(iter) and cycle(iter, n).

Iterators.cycle(iter, n) is the lazy equivalent of Base.repeat(vector, n), while Iterators.repeated(iter, n) is the lazy Base.fill(item, n).

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