Override string conversion for custom classes in Nim

Question

Is it possible to override whatever method is used when an object of a custom class is converted to a string for display?

For example, this code currently prints (x: 4, y: 5), but I want it to print just (4,5)

type Point = object
    x: int
    y: int

let p = Point(x:4, y:5)
echo p

What proc/method/whatever do I implement to change the default Point->string conversion used by echo?

Answer 1

Figured it out; echo's docs says you just gotta overload the $ operator:

from strformat import fmt

type Point = object
    x: int
    y: int

proc `$`(point: Point): string = fmt"({point.x}, {point.y})"


let p = Point(x:4, y:5)
echo p   # prints "(4, 5)"