pub fn attempts<T, E>(
most: usize,
at: impl FnMut(&usize) -> Result<Probe<T>, E>,
) -> Result<Option<T>, E>Expand description
probe over attempts 0, 1, 2, … — at most most of them — for a
sequence at makes itself (the k-th of a set of directions, the next
draw of a seeded generator).