newsletter

newsletter/HINTS.md

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+# Hints
+
+## 1. Read email addresses from a file
+
+- The [`simplifile.read` function][file-read] can be used to read the contents of a file.
+
+## 2. Create a log file for writing
+
+- The [`simplifile.create_file` function][file-create] can be used to create an empty file.
+
+## 3. Log a sent email
+
+- The [`simplifile.append` function][file-append] can be used to append text to a file.
+
+## 5. Send the newsletter
+
+- All the necessary operations on files were already implemented in the previous steps.
+- The [`result.try` function][result-try] and [`list.try_each` function][list-try-each] can be used to work with the `Result` type.
+
+[file-read]: https://hexdocs.pm/simplifile/simplifile.html#read
+[file-create]: https://hexdocs.pm/simplifile/simplifile.html#create_file
+[file-append]: https://hexdocs.pm/simplifile/simplifile.html#append
+[result-try]: https://hexdocs.pm/gleam_stdlib/gleam/result.html#try
+[list-try-each]: https://hexdocs.pm/gleam_stdlib/gleam/list.html#try_each