25 Ranges library [ranges]

25.7 Range adaptors [range.adaptors]

cache_latest_view caches the last-accessed element of its underlying sequence so that the element does not have to be recomputed on repeated access.

[Note 1:

This is useful if computation of the element to produce is expensive.

— end note]

The name views::cache_latest denotes a range adaptor object ([range.adaptor.object]).

Let E be an expression.

The expression views::cache_latest(E) is expression-equivalent to cache_latest_view(E).