List functions

1 files changed, 16 insertions, 0 deletions

diff --git a/lessons/src/lesson020_lists/code.gleam b/lessons/src/lesson020_lists/code.gleam
new file mode 100644
index 0000000..646ad6e
--- /dev/null
+++ b/lessons/src/lesson020_lists/code.gleam
@@ -0,0 +1,16 @@
+import gleam/io
+
+pub fn main() {
+  let ints = [1, 2, 3]
+
+  io.debug(ints)
+
+  // Immutably prepend
+  io.debug([-1, 0, ..ints])
+
+  // Uncomment this to see the error
+  // io.debug(["zero", ..ints])
+
+  // The original lists are unchanged
+  io.debug(ints)
+}