Sets

The following code examples demonstrate the built-in set type offered by the language. See section [TBD] for details.

Type Declaration

Set Name: {*Int}.

Accessing

Containment

some set: {*Int} [1, 2, 3];
some set(1?) = true
some set(4?) = false

some set: {*Int} [1, 2, 3];
some set(1?, 4?) = {true, false}

Retrieving

some set: {*Int} [1, 2, 3];
some set(...) = {1, 2, 3}  `Total collection accessor.`

Operators

Count

|{1, 2, 3} to {*Int}| = 3

|some set| = 5

Difference (Remove Elements)

{1, 2, 3} to {*Int} - {2, 3, 4, 5} = {1}

{2, 3, 4, 5} to {*Int} - {1, 2, 3} = {4, 5}

Equality

Setup

`Assume the following for all equality code examples.`

some set: {*Int} [1, 2, 3];

Approximate

some list: {Int*} [1, 2, 2, 3];
some set ~ some list

some dict: {Int: Int[-1]} [1[1], 2[1], 3[0]];
some set ~ some dict

Strict

some set = {1, 2, 3}

some set = {1, 2, ...}  `Match remaining values.`

Intersection

{1, 2, 3} to {*Int} % {2, 3, 4, 5} = {2, 3}

{2, 3, 4, 5} to {*Int} % {1, 2, 3, 3} = {2, 3}

Union (Appending)

{1, 2} to {*Int} + {2, 3} = {1, 2, 3}

{2, 3} to {*Int} + {1, 2} = {2, 3, 1}