> On 4 Aug 2020, at 14:38, Koos Zevenhoven wrote:
>
> Hi everyone,
>
> [ … analysis of design goals and possible solutions, including … ]
>
> Point3D(x=pi, y=SIX, z=value)
It suddenly struck me that
Point3D(x=pi, y=SIX, z into value)
would quite accurately describe what is being established here.
> [ … goes on … ]
>
> <expression> matches <pattern>
>
> and that would evaluate to a boolean-like value.
Yes. I’d like that as it separates functionality (pattern matching) from the
control structure (match statement).
> [ … ]
>
> Similarly, also
> point matches main_diagonal_point(pos?)
> should only match if x == y == z — and then bind that value to pos.
> However, one might expect to be able to write the same thing inline as
> point matches Point3D(pos?, pos?, pos?)
> , so based on that, multiple occurrences of the same binding target should
> ensure equality.
>
>
> What about wildcards? If ? were the wildcard, that would mean that
> point matches main_diagonal_point(?)
> should NOT mean the same as
> point matches Point3D(?,?,?)
>
> [ … ]
Clever observations!
> —Koos
—eric
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