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+import gleam/io
+import gleam/result
+
+pub fn main() {
+ let x = {
+ use username <- result.try(get_usename())
+ use password <- result.try(get_password())
+ use greeting <- result.map(log_in(username, password))
+ greeting <> ", " <> username
+ }
+
+ case x {
+ Ok(greeting) -> io.println(greeting)
+ Error(error) -> io.println_error(error)
+ }
+}
+
+// Here are some pretend functions for this example:
+
+fn get_usename() {
+ Ok("alice")
+}
+
+fn get_password() {
+ Ok("hunter2")
+}
+
+fn log_in(_username: String, _password: String) {
+ Ok("Welcome")
+}