Now that's a DIP that could use some love

[jmh530]

On Thursday, 17 September 2020 at 21:55:22 UTC, Andrei 
Alexandrescu wrote:
> [snip]

I don't think the people who disagree and instead think that the 
situation is good. HS Teoh recommended an alternative approach 
that may provide simpler error reports. His approach would 
effectively widen the template constraints to something like just 
isInputRange. One could still make an argument about isInputRange 
not provided valuable error reporting, but that is one thing that 
Atila's concepts library attempts to fix.