List functions

1 files changed, 15 insertions, 0 deletions

diff --git a/lessons/src/lesson021_list_functions/code.gleam b/lessons/src/lesson021_list_functions/code.gleam
new file mode 100644
index 0000000..8cd4ced
--- /dev/null
+++ b/lessons/src/lesson021_list_functions/code.gleam
@@ -0,0 +1,15 @@
+import gleam/io
+import gleam/list
+
+pub fn main() {
+  let ints = [0, 1, 2, 3, 4, 5]
+
+  let doubled = list.map(ints, fn(x) { x * 2 })
+  io.debug(doubled)
+
+  let even = list.filter(ints, fn(x) { x % 2 == 0 })
+  io.debug(even)
+
+  let total = list.fold(ints, from: 0, with: fn(count, e) { count + e })
+  io.debug(total)
+}