On Sat, 24 Mar 2012 19:07:01 -0400, Stewart Gordon <[email protected]>
wrote:
On 24/03/2012 18:57, Ali Çehreli wrote:
<snip>
Iterating an output range is also by popFront(). So what it says is,
put this element to
the output range and advance the range. There is a gotcha about this
when the output range
is a slice: Whatever is just put into the range is popped right away!
:) [2]
I'm beginning to get it now: the purpose of an output range is to put
new data into the underlying container. So once you've put something
in, the remaining range is what's left to be populated. I had been
thinking of outputting in terms of appending to the range, hence the
confusion.
The output range is almost an entirely orthogonal concept to an input
range. It basically defines a way to output elements.
How an output range directs its elements is up to the output range. It
may append, it may overwrite, it may prepend, it can do anything it wants.
The only commonality is that a *writable* input range can also be an
output range (writable meaning r.front = x works).
-Steve
