How do you debug @safe @nogc code? Can't figure out how to print.

[Stanislav Blinov]

On Saturday, 17 November 2018 at 13:13:36 UTC, aliak wrote:

> Sawweet! Thanks, that made the printing possible!

You're welcome ;) Still, try a more recent compiler. This works 
fine:

void foo() @nogc {
     debug {
         import std.stdio;
         writefln("%d", 42);
     }
}

> "scope" is const from what I understand right? It works without 
> scope as well. So just "return T".

No, "scope" means "does not escape scope", i.e. you can't assign 
that argument to some global. The only exception is through a 
return, in which case "return" also needed. Whether or not just 
"return" is sufficient, is a bit out there still (AFAIK), between 
DIP25, DIP1000 and current state of the language.
"scope" was implemented for delegates for ages now, exactly to 
allow passing lambdas around without allocating their context on 
the GC heap.