Mixed up over mixins.

[WhatMeForget via Digitalmars-d-learn]

On Sunday, 20 August 2017 at 19:41:14 UTC, Ali Çehreli wrote:
> On 08/20/2017 12:27 PM, WhatMeWorry wrote:
>
> >     // Mixins are for mixing in generated code into the
> source code.
> >     // The mixed in code may be generated as a template
> instance
> >     // or a string.
>
> Yes, it means that the string must be legal D code.
>
> >     mixin(`writeln(` ~ `Hello`  ~ `);` );
>
> Yes, that's a D string but the string itself is not legal D 
> code because it would be mixing in the following:
>
>     writeln(Hello);
>
> The problem is, there is no Hello defined in the program.
>
> You need to make sure that Hello is a string itself:
>
>     writeln("Hello");
>
> So, you need to use the following mixin:
>
>     mixin(`writeln(` ~ `"Hello"`  ~ `);` );
>
> Ali

Of course, why didn't I "see" that before. I should have slept on 
it and tried again with fresh eyes.  I'm keeping a "beginners 
journal" on code generation.  Maybe write a 101 introduction with 
lots of samples and exercises.

Thanks. Don't know if you noticed, but i used some code from your 
book. Hope you take that as a complement.