On Friday, 24 February 2017 at 04:22:17 UTC, Jonathan Marler
wrote:
I discovered the .capacity property of arrays. I don't know
why I've never seen this but it looks like this is how readln
is recovering this seemingly lost peice of data. This does
have an odd consequence though, if you pass a slice into readln
it will read past the end of it if the underlying buffer is
larger. This might be something worth adding to the
documentation.
Also I'm not completely sure how .capacity works, I assume it
has to look up this information in the memory management
metadata. Any enlightenment on this subject is appreciated. It
also says it's a O(log(n)) operation so I'm guessing it's
looking it up in some sort of binary tree data structure.
https://dlang.org/phobos/object.html#.capacity
