On Saturday, 6 February 2016 at 15:02:16 UTC, H. S. Teoh wrote:
On Sat, Feb 06, 2016 at 02:43:52PM +0000, Tofu Ninja via
Digitalmars-d-learn wrote:
Foreach seems to work if there is an opIndex() with no
arguments that returns a range interface, is this documented?
I can't seem to find anything that say this is supposed to
happen. I am not really complaining, its nice, but I just
didnt really expect it because I feel like I remember this
being an error some time ago.
Not really sure, but opIndex() with no arguments is supposed to
be the current way of implement the [] slicing operator for
user-defined types. I'm not sure when foreach started
supporting that, but it's certainly a nice thing!
T
I thought that opSlice() was supposed to be that operator. At
least this is what's used in std.container (e.g.
http://dlang.org/phobos/std_container_array.html#.Array.opSlice).
