Method insert

std/src/help.rs:313–316

(topics: &mut Trie<String, Box<dyn Topic>>, topic: Box<dyn Topic>)

    /// Builds an index of the given `callables` and returns a new collection of help topics.
    fn new(callables: &HashMap<SymbolKey, Rc<CallableMetadata>>) -> Self {
        fn insert(topics: &mut Trie<String, Box<dyn Topic>>, topic: Box<dyn Topic>) {
            let key = topic.name().to_ascii_uppercase();
            topics.insert(key, topic);
        }

        let mut topics = Trie::default();