DIP 1027---String Interpolation---Community Review Round 1

[Jab]

On Sunday, 15 December 2019 at 17:38:29 UTC, Adam D. Ruppe wrote:
> On Sunday, 15 December 2019 at 17:26:57 UTC, Jab wrote:
>> It being usable with snprintf() means it outputs something 
>> that pretty much no other function uses.
>
> D's writef uses it too, as well as std.format. Do do the vibe 
> logging functions.
>
> It is a common format.
>
> (though D's writef is supposed to replace C's printf... for 
> great part because of type safety.))

Literally the next sentence:

> The only thing I know of that implements printf-style 
> formatting is printf (or uses sprintf to implement it).

This is going to add a feature to the language that is dependent 
on a library feature. Even though the compiler creates and 
verifies the format strings, it's going to have to re-parse the 
format string at runtime anyways.

Implementing string interpolation will just grow the dependency 
on printf/sprintf. Cause like I said, no other function really 
actually implements that formatting scheme themselves. This 
limits and over-complicates the code around it.