Functions

Functions are first-class values in Jot.

Defining a function

let add = fn(a, b) a + b
print(add(1, 2))

Syntax:

fn(param1, param2, ...) expression

• Parameters are identifiers.
• Parameter names must be unique.
• Function body is a single expression.

Calling functions

let inc = fn(x) x + 1
print(inc(41))

Arity is checked at runtime.

Closures

Functions capture outer values when created.

let x = 10
let f = fn() x
x = 20
print(f())

Current behavior prints 10.

Current constraints

• No named function declaration syntax yet (fn name(...) ... is not in grammar).
• No direct recursion syntax at this stage.