Re: 'is(T==return)' How does is expression with return keyword as TypeSpecialization

[Alex via Digitalmars-d-learn]

On Thursday, 5 July 2018 at 11:37:16 UTC, Timoses wrote:

I think it refers to this section:
https://dlang.org/spec/expression.html#is_expression

I don't remember where I read this usage (think it was in a 
book), but I noted it down and now I wonder how it can be used.

I saw some usage cases, which are like "opposites" to auto fun() 
declarations:
So either you can declare

´´´
auto fun()
{
    int retVal;
    ...
    return retVal;
}
´´´

or


´´´
int fun()
{
    typeof(return) retVal;
    ...
    return retVal;
}
´´´