union

union
	YCP List Builtins

Name

union — Unions of lists

Synopsis

`list union (`	list	`LIST1` ,
	list	`LIST2` `)`;

Parameters

list LIST1: First List
list LIST2: Second List

Return

list

Description

Interprets two lists as sets and returns a new list that has all elements of the first list and all of the second list. Identical elements are merged. The order of the elements in the new list is preserved. Elements of l1 are prior to elements from l2.

WARNING: quadratic complexity so far

Usage

  union ([1, 2], [3, 4]) -> [1, 2, 3, 4]
  union ([1, 2, 3], [2, 3, 4]) -> [1, 2, 3, 4]
  union ([1, 3, 5], [1, 2, 4, 6]) -> [1, 3, 5, 2, 4, 6]


toset		Map Builtins