How come a count of a range becomes 0 before a foreach?

[ikelaiah]

On Monday, 10 April 2023 at 01:01:59 UTC, Steven Schveighoffer 
wrote:
> On 4/9/23 9:16 AM, Ali Çehreli wrote:
>> On 4/8/23 21:38, ikelaiah wrote:
>> 
>>  > I will modify the code to construct it twice.
>> 
>> Multiple iterations of dirEntries can produce different 
>> results, which may or may not be what your program will be 
>> happy with.
>> 
>> Sticking an .array at the end will iterate a single time and 
>> maintain the list forever because .array returns an array. :)
>> 
>>    auto entries = dirEntries(/* ... */).array;
>
> I'd be cautious of that. I don't know what the underlying code 
> uses, it may reuse buffers for e.g. filenames to avoid 
> allocation.
>
> If you are confident the directory contents won't change in 
> that split-second, then I think iterating twice is fine.
>
> -Steve

Steve,

The Rmd files are not on a network drive, but saved locally.
So, I'm confident, the files won't change in a split-second.

-ikelaiah.