Lists

Object Hierarchy:

Description:

    var list = new ArrayList<string> (GLib.str_equal);
    list.add ("a");
    list.add ("b");
    list.add ("c");
    list.add ("d");
    var chunks = Lists.chunkString (list, 2);
    // chunks: [["a","b"], ["c","d"]]

Content:

Static methods:

• public static ArrayList<ArrayList<T>> chunk<T> (ArrayList<T> list, int size)
  Splits a list into fixed-size chunks.
• public static ArrayList<ArrayList<string>> chunkString (ArrayList<string> list, int size)
  Splits a string list into sub-lists of the given size. The last chunk may be smaller.
• public static ArrayList<T> distinct<T> (ArrayList<T> list, HashFunc<T> hash_func, EqualFunc<T> equal_func)
  Removes duplicate elements while preserving order.
• public static ArrayList<string> distinctString (ArrayList<string> list)
  Removes duplicates from a string list, preserving order.
• public static ArrayList<T> flatten<T> (ArrayList<ArrayList<T>> nested)
  Flattens nested lists into one list.
• public static ArrayList<string> flattenString (ArrayList<ArrayList<string>> nested)
  Flattens a nested list of string lists into a single list.
• public static HashMap<T,int> frequency<T> (ArrayList<T> list, HashFunc<T> hash_func, EqualFunc<T> equal_func)
  Counts element frequencies in a list.
• public static HashMap<string,int> frequencyString (ArrayList<string> list)
  Counts the frequency of each string in the list.
• public static HashMap<K,ArrayList<T>> groupBy<T,K> (ArrayList<T> list, owned MapFunc<T,K> keyFn, HashFunc<K> hash_func, EqualFunc<K> equal_func)
  Groups list elements by computed keys.
• public static HashMap<string,ArrayList<string>> groupByString (ArrayList<string> list, owned MapFunc<string,string> keyFn)
  Groups elements by a key extracted from each element.
• public static ArrayList<T> interleave<T> (ArrayList<T> a, ArrayList<T> b)
  Interleaves two lists by alternating elements.
• public static ArrayList<string> interleaveString (ArrayList<string> a, ArrayList<string> b)
  Interleaves two string lists by alternating elements.
• public static Pair<ArrayList<T>,ArrayList<T>> partition<T> (ArrayList<T> list, owned PredicateFunc<T> fn)
  Splits a list into matching and non-matching lists.
• public static Pair<ArrayList<string>,ArrayList<string>> partitionString (ArrayList<string> list, owned PredicateFunc<string> fn)
  Splits a string list into two lists based on a predicate. The first list contains elements matching the predicate, the second contains the rest.
• public static ArrayList<string> reverseString (ArrayList<string> list)
  Returns a reversed copy of the string list.
• public static ArrayList<T> rotate<T> (ArrayList<T> list, int distance)
  Rotates elements by distance and returns new list. Positive values rotate right, negative rotate left.
• public static ArrayList<T> shuffle<T> (ArrayList<T> list)
  Returns a shuffled copy of the list.
• public static ArrayList<ArrayList<T>> sliding<T> (ArrayList<T> list, int windowSize)
  Returns sliding windows over a list.
• public static ArrayList<ArrayList<string>> slidingString (ArrayList<string> list, int windowSize)
  Returns sliding windows of the given size over the list.
• public static ArrayList<T> sortBy<T,K> (ArrayList<T> list, owned MapFunc<T,K> keyFn, owned ComparatorFunc<K> cmp)
  Sorts list by computed key using key comparator.
• public static ArrayList<Pair<A,B>> zip<A,B> (ArrayList<A> a, ArrayList<B> b)
  Combines two lists into list of pairs. Result size is minimum of both input sizes.
• public static ArrayList<Pair<string,string>> zipString (ArrayList<string> a, ArrayList<string> b)
  Combines two string lists into a list of Pairs. The result length is the minimum of both list sizes.
• public static ArrayList<Pair<int,T>> zipWithIndex<T> (ArrayList<T> list)
  Creates (index, element) pairs for a list.
• public static ArrayList<Pair<int,string>> zipWithIndexString (ArrayList<string> list)
  Creates a list of Pairs with each element and its index.

Creation methods:

• public Lists ()

Inherited Members: