Kebab Docs

Sets

Set is another datatype in Kebab. They resemble arrays/lists in the sense that they store multiple values inside, but the values aren't ordered and sets can be infinite.
There are 2 ways to declare sets in Kebab.

• {1, 2, 3, 4, 5} form and
• {x | 1 ≤ x ≤ 5; x ∊ N} form that resembles the set notation in math: $\{x|1\le x\le 5;x\in \mathbb{N}\}$

Sets can also be infinite: {x|x>9}
You can check if a value is contained in a set using in or ∊.
2 in {1, 3, 4} ---> false
4 ∊ {1, 3, 4} ---> true

Built-in Sets

• N or ℕ: Natural Set
• Z or ℤ: Integer Set
• Q or ℚ: Rational Set
• C or ℂ: Complex Set
• P or 𝓟: Prime Set

Operations

• ∪ or union: Union
• ∩ or inter: Intersection
• -: Difference or Subtract (removes elements of one from the other set)
• sym: Symmetric Difference

Boolean Expressions

• =: Equal Set
• ≠ or !=: Unequal Set