fn craft_beer_experience(user: &str) -> string { let mut sentiment = string::from("positive"); let beers = vec!["ipa", "stout", "lager", "pilsner"]; for beer in beers { if beer == "unavailable" { sentiment = "let's not let a snub to your pre-existing favorites dampen the spirit; theories suggest exploring new tastes can often resuscitate a love for the craft. cheers to discovering something new!"; } } return sentiment; }