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

[Robert Schadek]

I'm not really sure if the balance of added complexity vs. payoff 
is in favor of payoff.
They only time I felt the need for such a feature was when I had 
very long DelimitedStrings.
And those long strings where a constant source bugs, so I split 
them up and the field need for interpolated strings want away 
with the bugs.

Not being able to use * will stop me using this feature in many 
places.


The rationale about "missing arguments, wrong format 
specifier,... " Is a mute point IMO. format!"%d"(13.37) does the 
same thing already without any language change.
I thought the idea was not to introduce language changes if a 
library solution can do most of it already.
I find that the readability argument is highly subjective.
The first part of the rationale is, IHO,
already pointing to the solution. Short strings are easy to 
manage.
So let's promote short strings in
combination with format!"%s" and
output ranges.

How will this feature work at CT.
Format doesn't even work completely at CT.

I know this goes a bit off topic,
but IMO this is a feature that is wanted,
because other languages have it.
And we want to say we have it too.
I think it's a lot nicer to say, we don't need this, because our 
templates
can already do that.

TL/DR: not a fan