Maps

Object Hierarchy:

Description:

    var defaults = new HashMap<string, string> (GLib.str_hash, GLib.str_equal);
    defaults.put ("theme", "light");
    defaults.put ("lang", "en");
    var overrides = new HashMap<string, string> (GLib.str_hash, GLib.str_equal);
    overrides.put ("theme", "dark");
    var config = Maps.mergeString (defaults, overrides);
    // config: {"theme": "dark", "lang": "en"}

Content:

Static methods:

• public static V computeIfAbsent<K,V> (HashMap<K,V> map, K key, owned SupplierFunc<V> fn)
  Returns the value for the key. If absent, computes value with fn, stores it, and returns it.
• public static string computeIfAbsentString (HashMap<string,string> map, string key, owned SupplierFunc<string> fn)
  Returns the value for the key. If the key is absent, computes the value using the supplier function, stores it in the map, and returns it.
• public static ArrayList<Pair<K,V>> entries<K,V> (HashMap<K,V> map)
  Returns all key-value entries as Pair list.
• public static ArrayList<Pair<string,string>> entriesString (HashMap<string,string> map)
  Returns an ArrayList of key-value Pairs from the map.
• public static HashMap<K,V> filter<K,V> (HashMap<K,V> map, owned BiPredicateFunc<K,V> fn, HashFunc<K> hash_func, EqualFunc<K> equal_func)
  Returns a new map containing only entries that match the predicate.
• public static HashMap<string,string> filterString (HashMap<string,string> map, owned BiPredicateFunc<string,string> fn)
  Returns a new map containing only entries that match the predicate.
• public static HashMap<K,V> fromPairs<K,V> (ArrayList<Pair<K,V>> pairs, HashFunc<K> hash_func, EqualFunc<K> equal_func)
  Creates a map from key-value pairs.
• public static HashMap<string,string> fromPairsString (ArrayList<Pair<string,string>> pairs)
  Creates a HashMap from a list of key-value Pairs. If duplicate keys exist, later Pairs overwrite earlier ones.
• public static V getOrDefault<K,V> (HashMap<K,V> map, K key, V defaultValue)
  Returns the value for the key, or defaultValue when key is missing.
• public static string getOrDefaultString (HashMap<string,string> map, string key, string defaultValue)
  Returns the value for the key, or the default value if the key is not found.
• public static HashMap<V,K> invert<K,V> (HashMap<K,V> map, HashFunc<V> hash_func, EqualFunc<V> equal_func, owned ConflictResolverFunc<K>? on_conflict = null)
  Returns a new map with keys and values swapped.
• public static HashMap<string,string> invertString (HashMap<string,string> map, owned ConflictResolverFunc<string>? on_conflict = null)
  Returns a new map with keys and values swapped. If multiple entries have the same value, later entries overwrite earlier ones in the result unless conflict resolver is provided.
• public static bool isEmpty<K,V> (HashMap<K,V> map)
  Returns whether the map has no entries.
• public static bool isEmptyString (HashMap<string,string> map)
  Returns whether the map is empty.
• public static ArrayList<K> keys<K,V> (HashMap<K,V> map)
  Returns all keys as an ArrayList.
• public static ArrayList<string> keysString (HashMap<string,string> map)
  Returns an ArrayList of all keys in the map.
• public static HashMap<J,V> mapKeys<K,V,J> (HashMap<K,V> map, owned MapFunc<K,J> fn, HashFunc<J> hash_func, EqualFunc<J> equal_func, owned ConflictResolverFunc<V>? on_conflict = null)
  Returns a new map with transformed keys and preserved values.
• public static HashMap<string,string> mapKeysString (HashMap<string,string> map, owned MapFunc<string,string> fn, owned ConflictResolverFunc<string>? on_conflict = null)
  Returns a new map with all keys transformed by the function. Values are preserved. If multiple keys map to the same new key, later entries overwrite earlier ones unless conflict resolver is provided.
• public static HashMap<K,U> mapValues<K,V,U> (HashMap<K,V> map, owned MapFunc<V,U> fn, HashFunc<K> hash_func, EqualFunc<K> equal_func)
  Returns a new map with transformed values and preserved keys.
• public static HashMap<string,string> mapValuesString (HashMap<string,string> map, owned MapFunc<string,string> fn)
  Returns a new map with all values transformed by the function. Keys are preserved.
• public static HashMap<K,V> merge<K,V> (HashMap<K,V> a, HashMap<K,V> b, HashFunc<K> hash_func, EqualFunc<K> equal_func)
  Merges two maps into a new map. When both maps contain the same key, the value from the second map takes priority.
• public static HashMap<string,string> mergeString (HashMap<string,string> a, HashMap<string,string> b)
  Merges two string maps into a new map. When both maps contain the same key, the value from the second map takes priority.
• public static ArrayList<V> values<K,V> (HashMap<K,V> map)
  Returns all values as an ArrayList.
• public static ArrayList<string> valuesString (HashMap<string,string> map)
  Returns an ArrayList of all values in the map.

Creation methods:

• public Maps ()

Inherited Members: