TLookupStringList is a TStringList descendant that implements an unsorted string list with a fast lookup feature. Internally it -uses a map container to store the strings which are used in the -Contains, IndexOf and Find methods. The map -container does not reserve too much memory because the strings are reference -counted and not copied. +uses a map container, TStringMap from unit AvgLvlTree, +which is a balanced tree. The strings are stored in 2 places, in the string list +itself and in the map container. The map is used in Contains, +IndexOf and Find methods. The map container does not +reserve too much memory because the strings are reference counted and not copied.
-All values for the Duplicates property are fully supported, including +All values for the Duplicates property are fully supported, including dupIgnore and dupError (unlike in unsorted TStringList class).