See docs compiler message

[ixid]

On Tuesday, 6 March 2018 at 14:37:27 UTC, Steven Schveighoffer 
wrote:
> Now, there aren't actually docs for Transposed, but you can 
> find it if you look at std.range.transposed:
>
> https://dlang.org/phobos/std_range.html#transposed
>
> -Steve

Thanks, I had found that but that is not an explanation unless 
you have a lot of prior technical understanding of what save is 
and why it's not working. I guess it's a general doc quality 
issue - unless you're already very knowledgeable it's pretty much 
useless to understand the problem you have.

I transposed a range of ranges to pass to a function to get the 
distance between characters in strings. That works fine, as does 
printing the result. But it then complains if I try to do 
anything like fold with the result.