Solve day 1 of 2020 in Gleam

1 files changed, 26 insertions, 0 deletions

diff --git a/aoc-2020-gleam/src/util/input_util.gleam b/aoc-2020-gleam/src/util/input_util.gleam
new file mode 100644
index 0000000..3e6b076
--- /dev/null
+++ b/aoc-2020-gleam/src/util/input_util.gleam
@@ -0,0 +1,26 @@
+import gleam/list
+import gleam/string
+import gleam/erlang/file
+import ext/intx
+import ext/stringx
+import ext/resultx
+
+pub fn read_text(filename: String) -> String {
+  "data/" <> filename <> ".txt"
+  |> file.read()
+  |> resultx.force_unwrap()
+}
+
+pub fn read_lines(filename: String) -> List(String) {
+  filename
+  |> read_text()
+  |> string.split(on: "\n")
+  |> list.map(with: string.trim)
+  |> list.filter(for: stringx.is_not_empty)
+}
+
+pub fn read_numbers(filename: String) -> List(Int) {
+  filename
+  |> read_lines()
+  |> list.map(with: intx.force_parse)
+}