The `with` construct is good, but it could be great

[Quirin Schroll]

The [`with` 
statement](https://dlang.org/spec/statement.html#with-statement) 
is a good feature. However, a lot of people including me believe 
that it lacks potential to be great.

It introduces scope and cannot be used in a declarative scope.

It’s shortcomings are surprisingly similar to C++’s `if 
constexpr` that Andrei in [*Design by 
Introspection*](https://www.youtube.com/watch?v=k31wZafAMhk&t=1712) considered to be a “fatal mistake”.

Up for discussion, I’d even suggest a no-brace form for `with` 
*declarations:*
* `with Symbol:` or `with(Symbol):` (like attributes)
* `with Symbol;` (like `import`)

That implemented, `with` would be a great feature.

Contrary to others, I do not believe that `with` expressions 
would be necessary. The main reason `with` expressions are asked 
for is because `with` introduces scope.