Lesson 05 — Functions

日本語

Syntax

Declare a one-liner function with to:

fn double x to return x mul 2

Or use an indented block body. Separate multiple parameters with ;:

fn add a; b
  return a add b

Call functions with [], separating arguments with ;:

double[21]      -- 42
add[1; 2]       -- 3

Task

1. Make double return x mul 2.

2. Make add-nums return a add b.

Check

npm test 05

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• Functions