The Thermopylae excerpt of TDPL available online

[Jason House]

Andrei Alexandrescu Wrote:

> It's a rough rough draft, but one for the full chapter on arrays, 
> associative arrays, and strings.
> 
> http://erdani.com/d/thermopylae.pdf
> 
> Any feedback is welcome. Thanks!

I still think is expressions are a glaring problem. Somewhere in the text, you use assert(!is(typeof(... as support for what you're talking about. That particular construct feels more like a hack someone stumbled into than clean, easy to read code. It's the type of thing a programmer will get wring unless they use it frequently. Even you've screwed it up in past Phobos releases!  IMHO all is(...) expressions should be revisited. Have you written the section(s) on them yet?

Also, on page 8? a code comment says average of a and b even though the variables don't exist.