What does 'inline' mean?

[Andrei Alexandrescu]

On 6/12/20 8:52 PM, Manu wrote:
> Except in the case I described as case #3, in which it would be useful 
> to have SOME WAY, to 'force inline' and receive an error if it failed.

I recall a couple of compilers (TopSpeed, does anyone remember?) had 
such a feature. The warnings listing the arbitrary functions that failed 
whatever heuristics was utterly useless. No C++ compiler implements it 
today, and I don't think any should.