Re: [Seed7-users] Object Comparison Broken?

[Thomas M. <mer...@gm...>]

Hey Zachary,

For struct types the = and <> operators are not automatically defined.
If you want these operators you need to define them yourself. E.g.:

const func boolean: (in Box: box1) = (in Box: box2) is
  return box1.x   = box2.x and box1.y = box2.y;

const func boolean: (in Box: box1) <> (in Box: box2) is
  return not box1 = box2;

This allows that some fields of the struct are not considered for equality.
E.g.: In time.s7i the time comparison = does not consider timeZone and
daylightSavingTime.

Normalizing values before doing the actual comparison would also be
an option.

I will consider a way to quickly define the simple case where all elements
are compared for equality.

Best regards
Thomas