Working on a library: request for code review

[Mike via Digitalmars-d-learn]

Thanks, will work on fixes tonight.


> The current method will not detect an error when the image type
> is not mapped  but a color map is present.
> At least I assume that is not a valid TGA file?

A non-mapped image may contain a color map ;-0 it's simply 
discarded.


As per your ideas

>return to!bool(isColorMapped(header)
>                        ? header.colorMapDepth.among(16, 32)
>                        : header.pixelDepth.among(16, 32));

this is not nothrow, but as you can see there is nothing that can 
ever throw.. so perhaps I'll stick to the cast(bool) thing.. Any 
idea?