Inserts the key-value pair into the symbol table, overwriting the old value with the new value if the key is already in the symbol table. If the value is None, this effectively deletes the key from the symbol table.
(&mut self, key: &str, val: Option<T>)
| 86 | /// symbol table. If the value is None, this effectively |
| 87 | /// deletes the key from the symbol table. |
| 88 | pub fn put(&mut self, key: &str, val: Option<T>) { |
| 89 | if val.is_none() { |
| 90 | self.delete(key); |
| 91 | } else { |
| 92 | let mut root = self.root; |
| 93 | root = unsafe { self.put_dth(root, key, val, 0) }; |
| 94 | self.root = root; |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | /// Removes the key from the set if the key is present |
| 99 | pub fn delete(&mut self, key: &str) { |