RMap<K, V> extension

on

Methods

exceptEmpty() → Map<K, V?>
  • return the map without key of empty values
    • exceptNull() → Map<K, V>
  • return the map without key of null values
    • exceptNullAndEmpty() → Map<K, V?>
  • return the map without key of null values and empty
    • expect(List<K> keys) → Map<K, V?>
  • return the map without some keys
    • flip() → Map<V, K>
  • swaps the collection's keys with their corresponding values
    • only(List<K> keys) → Map<K, V?>
  • return a new Map with only keys you need it
    • randomEntry() → MapEntry<K, V>
    return random Entry or throw state error
    randomEntryOr(MapEntry<K, V> def) → MapEntry<K, V>
    return random Entry or the default if map is empty
    randomEntryOrBuilder(MapEntry<K, V> builder()) → MapEntry<K, V>
    return random Entry or the use the builder to return the key
    randomEntryOrNull() → MapEntry<K, V>?
    return random Entry or null if map is Empty
    randomKey() → K
    return random key or throw state error
    randomKeyOr(K def) → K
    return random key or the default if map is empty
    randomKeyOrBuilder(K builder()) → K
    return random key or the use the builder to return the key
    randomKeyOrNull() → K?
    return random key or null if map is Empty
    randomValue() → V
    return random value or throw state error
    randomValueOr(V def) → V
    return random value or the default if map is empty
    randomValueOrBuilder(V builder()) → V
    return random value or the use the builder to return the key
    randomValueOrNull() → V?
    return random value or null if map is Empty
    whereNull() → Map<K, V>
  • return a new map with the null values from the original map only