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Fuzion • Idioms • Idiom # 268: User-defined operator

Idiom # 268: User-defined operator

See programming-idioms.org:

Code

vector (x, y, z f64) is

  infix ⨯ (other vector) vector is
    vector
      (vector.this.y*other.z - vector.this.z*other.y)
      (vector.this.z*other.x - vector.this.x*other.z)
      (vector.this.x*other.y - vector.this.y*other.x)

What are effects?

Running Example

ex268 is

  vector (x, y, z f64) is

    infix ⨯ (other vector) vector is
      vector
        (vector.this.y*other.z - vector.this.z*other.y)
        (vector.this.z*other.x - vector.this.x*other.z)
        (vector.this.x*other.y - vector.this.y*other.x)

    redef as_string =>
      "($x, $y, $z)"

  a := vector 1 0 0
  b := vector 0 1 0

  say a⨯b

What are effects?

next: NYI: Idiom # 269: Enum to String