如何在Toit语言中为自定义Vector类重载+运算符？

Absolutely! Toit supports operator overloading through special method names, so you can easily add a meaningful + operation to your Vector class. The key is defining an operator+ method that takes another Vector instance and returns a new Vector with the summed components.

Here's how to modify your code to make this work:

class Vector:
  x/float ::= ?
  y/float ::= ?
  constructor .x .y:

  # Overload the + operator for vector addition
  operator+ other/Vector -> Vector:
    return Vector (x + other.x) (y + other.y)

main:
  v1 := Vector 1.0 2.0
  v2 := Vector 3.0 4.0
  result := v1 + v2
  log "v1 + v2 = Vector ${result.x} ${result.y}"

How this works: #

• The operator+ method is recognized by Toit as the implementation for the + operator when used with Vector instances.
• It takes another Vector as input, calculates the sum of the corresponding x and y components, and returns a brand new Vector with those summed values.
• When you run this code, it will output: v1 + v2 = Vector 4.0 6.0

You can extend this pattern to overload other operators too—like - with operator-, or even scalar multiplication with operator* if you want to support operations like Vector 2.0 3.0 * 5.0.

内容的提问来源于stack exchange，提问作者Kasper Lund