You know how I was saying in my DConf talk...

Ethan gooberman at
Fri Jul 26 12:56:07 UTC 2019

On Friday, 26 July 2019 at 10:33:29 UTC, Kagamin wrote:
> The compiler on provides plenty of context:
> /dlang/dmd/linux/bin64/../../src/phobos/std/traits.d(482): 
> Error: local scope __anonymous is not a variable
> /dlang/dmd/linux/bin64/../../src/phobos/std/traits.d(580): 
> Error: template instance `std.traits.parentOf!(StructOne)` 
> error instantiating
> onlineapp.d(16):        instantiated from here: 
> moduleName!(StructOne)
> onlineapp.d(16):        while evaluating pragma(msg, 
> moduleName!(StructOne))
> It provides instantiation stack and all line numbers where 
> error occurs.

Simple use cases like my example are not the problem.

There's an error I was getting the other day that doesn't give a 
line number, just a file.

Another one starts with "COMPILE".

Both of those required unrolling code and tinkering to work out 
what was wedged in their bonnet.

And of course I have no idea how to reproduce them either because 
they're deep in mixins in templated functions in templates in 

I do not write normal code in D. But down in my meta rabbit hole 
is where all of D's real ultimate power is.

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