Functions and built-ins

Learning objective

Define functions and use built-ins with correct arguments and return values.

Key syntax

func add(a: int, b: int) -> int {
    return a + b;
}

print(add(2, 3));

Examples

Core built-ins: print, len, input, str, int, float, bool, type_of.
Utility built-ins: abs, min, max, pow, round, floor, ceil, random.
Collection helpers through methods:

- list: insert, remove, removeAt, extend, first, last, is_empty, copy, clear - dict: items, size, merge, put, remove, is_empty, clear

String helpers through methods:

- formatting: ltrim, rtrim, pad_left, pad_right, capitalize, title - conversion/checking: to_int, to_float, to_bool, count, is_numeric, is_alpha, is_alnum

Common mistakes

Wrong argument count.
Return type mismatch.
Calling non-callable values.

Suggested practice

Create helper functions for grade average and pass/fail decision.

builtins-math-date
diagnostics