Postfix type notation - readability and parsing?

[Simen Kjærås]

On Saturday, 9 March 2019 at 20:50:37 UTC, Paul Backus wrote:

> The only issue with using __LINE__ is that it requires gensym 
> to be evaluated in the same scope as the one the variable is 
> being declared in.

There are other issues:

string gensym(size_t id = __LINE__) {
     return format("_gensym_%d", id);
}

static assert(gensym() == gensym()); // We don't want this to 
pass.

unittest {
     string[2] s;
     static foreach (i; 0..2) {
         s[i] = gensym;
     }
     assert(s[0] == s[1]); // Nor this.
}

The first would be fixed by having __COL__ (being the column of 
the line on which gensym is being called). However, that does 
nothing for the second case.

--
   Simen