You're Doing In-Conditions Wrong

[FeepingCreature]

On Thursday, 16 July 2020 at 13:56:36 UTC, Steven Schveighoffer 
wrote:
> It's like having an if/else statement spread out over several 
> modules.
>

Worse: it's like having an if expression and body spread over 
several modules.

> I don't have a good answer. I don't know that implementing the 
> contracts differently is going to achieve a better outcome. But 
> I understand that the current situation is not ideal.

Well, the `else in()` idea from the other comment would work... 
problem is you can have multiple `in()` statements that are anded 
together, and then `else in` breaks down. So really, D went into 
a problematic direction many years ago.

Iunno. I feel changing the spec and adding an opt-in 
`InconditionLogicError`, with a very long deprecation period, 
would be a way we could start digging our way out of the hole 
again.