Syntax

This section outlines the syntax rules in mq, providing a clear reference for writing valid code.

Statements and Pipes

A program is a sequence of expressions joined by the pipe operator (|). The result of each expression is the input of the next one.

A | is required between two statements. Two expressions written next to each other are a syntax error, for example let x = 1 let y = 2.

let x = 1
| let y = 2
| x + y
# => 3

Array elements and call arguments are separated by commas. A trailing comma is allowed.

Constructs that need no pipe after them

A construct that ends with its own ; or end can be followed directly by the next statement. This applies to def, fn, do ... end, foreach, while, until, loop, match and module, and to import and include.

import "csv"
def double(x): x * 2;
| double(21)
# => 42