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| author | Federico Igne <git@federicoigne.com> | 2020-12-28 09:42:59 +0000 |
|---|---|---|
| committer | Federico Igne <git@federicoigne.com> | 2021-11-03 18:55:08 +0000 |
| commit | 11fd2671d7021f0672a89f9ea20ec42643e693bf (patch) | |
| tree | 8b7efa3bfa55c3a99bff2435e849b587e1f65605 /rust/etl/src/lib.rs | |
| parent | 8351828eadc332fe34ffd609a4aae96fe0511e78 (diff) | |
| download | exercism-11fd2671d7021f0672a89f9ea20ec42643e693bf.tar.gz exercism-11fd2671d7021f0672a89f9ea20ec42643e693bf.zip | |
[rust] ETL
Diffstat (limited to 'rust/etl/src/lib.rs')
| -rw-r--r-- | rust/etl/src/lib.rs | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/rust/etl/src/lib.rs b/rust/etl/src/lib.rs new file mode 100644 index 0000000..dd0752c --- /dev/null +++ b/rust/etl/src/lib.rs | |||
| @@ -0,0 +1,7 @@ | |||
| 1 | use std::collections::BTreeMap; | ||
| 2 | |||
| 3 | pub fn transform(h: &BTreeMap<i32, Vec<char>>) -> BTreeMap<char, i32> { | ||
| 4 | h.iter() | ||
| 5 | .flat_map(|(k, v)| v.iter().map(move |x| (x.to_ascii_lowercase(), *k))) | ||
| 6 | .collect() | ||
| 7 | } | ||