lean2/library/standard/data/data.md

data

Various data types.

Basic types:

• empty : the empty type
• unit : the singleton type
• bool : the boolean values
• num : generic numerals
• string : ascii strings
• nat : the natural numbers
• int : the integers

Constructors:

• prod : cartesian product
• sum
• sigma : the dependent product
• option
• subtype
• list
• set