Document opaque types

Closes https://github.com/gleam-lang/language-tour/issues/63

1 files changed, 0 insertions, 38 deletions

diff --git a/src/content/chapter5_advanced_features/lesson00_use/code.gleam b/src/content/chapter5_advanced_features/lesson00_use/code.gleam
deleted file mode 100644
index e7b435b..0000000
--- a/src/content/chapter5_advanced_features/lesson00_use/code.gleam
+++ /dev/null
@@ -1,38 +0,0 @@
-import gleam/io
-import gleam/result
-
-pub fn main() {
-  io.debug(without_use())
-  io.debug(with_use())
-}
-
-pub fn without_use() {
-  result.try(get_username(), fn(username) {
-    result.try(get_password(), fn(password) {
-      result.map(log_in(username, password), fn(greeting) {
-        greeting <> ", " <> username
-      })
-    })
-  })
-}
-
-pub fn with_use() {
-  use username <- result.try(get_username())
-  use password <- result.try(get_password())
-  use greeting <- result.map(log_in(username, password))
-  greeting <> ", " <> username
-}
-
-// Here are some pretend functions for this example:
-
-fn get_username() {
-  Ok("alice")
-}
-
-fn get_password() {
-  Ok("hunter2")
-}
-
-fn log_in(_username: String, _password: String) {
-  Ok("Welcome")
-}