Finish day 11

1 files changed, 10 insertions, 0 deletions

diff --git a/aoc-2020-gleam/src/ext/setx.gleam b/aoc-2020-gleam/src/ext/setx.gleam
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+++ b/aoc-2020-gleam/src/ext/setx.gleam
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+import gleam/set.{Set}
+import gleam/iterator as iter
+import ext/iteratorx as iterx
+
+pub fn count(set: Set(a), satisfying predicate: fn(a) -> Bool) -> Int {
+  set
+  |> set.to_list
+  |> iter.from_list
+  |> iterx.count(satisfying: predicate)
+}