proposal: short => rewrite for function declarations

[Adam D. Ruppe]

On Friday, 9 October 2020 at 19:11:44 UTC, Steven Schveighoffer 
wrote:
> You aren't saving much though, I do a lot of one-liners like:

Yeah, but we could (and did) say the same thing about the other 
uses of the => syntax. It was accepted there, so this just makes 
it consistently allowed in more cases.

> Which is super-useful and less verbose. But in this syntax, I'm 
> guessing it's going to interpret v as a type?

Right, it will complain "undefined identifier", same as if you 
wrote it `whatever foo(v) { return stuff; }`. As you can see from 
the PR diff, there's no special cases, just a straight forward 
syntax shortcut to keep it simple.

Of course you can still do:

auto identity(T)(T a) => a;

if you wanted to.