Related to #792
To make Intersperse[With] adaptors lazy, I use a nested option which is what core::iter::Peekable uses internally.
EDITs: I certainly hope that it's okay to use a nested option in such case because I did a similar thing to make Product lazy (fixing cartesian_product and iproduct! un-laziness) and make CoalesceBy lazy (fixing 5 methods) that I'll publish once this PR is merged.
Related to #792 To make
Intersperse[With]adaptors lazy, I use a nested option which is whatcore::iter::Peekableuses internally.EDITs: I certainly hope that it's okay to use a nested option in such case because I did a similar thing to make
Productlazy (fixingcartesian_productandiproduct!un-laziness) and makeCoalesceBylazy (fixing 5 methods) that I'll publish once this PR is merged.