Discussion Thread: DIP 1036--String Interpolation Tuple Literals--Community Review Round 2

[Steven Schveighoffer]

On 1/29/21 7:41 AM, Paul Backus wrote:
> On Friday, 29 January 2021 at 12:09:26 UTC, Dukc wrote:
>> On Friday, 29 January 2021 at 11:09:57 UTC, Walter Bright wrote:
>>> Sure, but #DIP1027 did not require a GC or fiddling around. So it's 
>>> not like it's not possible.
>>
>> You need to remember that perhaps the most important use case for 
>> string interpolation are string mixins. With DIP1027, one would have 
>> to write `mixin(i"foreach(i;0..${iterations}) foo()".format)` instead 
>> of `mixin(i"foreach(i;0..${iterations}) foo()")` that works with this 
>> proposal. Added `.format` for every single interpolated string mixin.
> 
> You cannot actually pass an i"..." literal directly to `mixin` with this 
> proposal; you have to call `idup` (or some other function) to convert it 
> to a string first.

This is not true. mixin(i"...") will work just fine (an implicit idup 
will be added).

-Steve