Function itertools::flatten
[−]
[src]
ⓘImportant traits for Flatten<I, J>
pub fn flatten<I, J>(iterable: I) -> Flatten<I::IntoIter, J> where
I: IntoIterator,
I::Item: IntoIterator<IntoIter = J, Item = J::Item>,
J: Iterator,
Flatten an iterable of iterables into a single combined sequence of all the elements in the iterables.
This is more or less equivalent to .flat_map
with an identity
function.
This is an IntoIterator
-enabled version of the .flatten()
adaptor.
use itertools::flatten; let data = vec![vec![1, 2, 3], vec![4, 5, 6]]; itertools::assert_equal(flatten(&data), &[1, 2, 3, 4, 5, 6]);