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207174c692
directory_lister provides a simpler interface
compared to lister.
After creating the directory_lister,
its async get() method should be called repeatedly,
returning a std::optional<directory_entry> each call,
until it returns a disengaged entry or an error.
This is especially suitable for coroutines
as demonstrated in the unit tests that were added.
For example:
auto dl = directory_lister(path);
while (auto de = co_await dl.get()) {
co_await process(*de);
}
Signed-off-by: Benny Halevy <bhalevy@scylladb.com>