[OT] Modules dropped out of C++17

[Walter Bright via Digitalmars-d]

On 6/9/2015 1:06 PM, Shachar Shemesh wrote:
> In practice, when your code gets big enough in a certain field, similar names
> are pretty much unavoidable. Admittedly, this is mostly around variable names. I
> lost count over the number of variables called "diskIdx" I have. While not
> exactly duplicate per-se, there is also a (member) function by that name. Try to
> find where "diskIdx" is defined, and you /will/ get swamped.

First off, D does not allow "shadowing" local variable declarations. Secondly, 
if you've got a lot of global variables, you've got a program design problem 
anyway. And lastly, naming everything "diskIdx" is a problem of your own creation.

You could design a language that does not allow any duplicate names anywhere, 
and no scoping rules would be required. But there's a reason no such language 
has caught on - it does not scale and is unusable.

I take that back, early BASIC implementations did have such. You could only have 
single letter names followed by a single digit, and all names were global and 
hence must be unique. What a relief to leave that behind.